Ask the Wizard! No. 81
May 5, 2003
According to the Las Vegas Advisor the record for the longest time a single shooter held the dice in craps is held by Stanley Fujitake, who once held the dice for three hours and six minutes at the downtown casino before sevening out.
(1) What are the odds that Mr. Fujitake could have accomplished his
feat, assuming typical craps speed?
(2) What are the odds that this happened in Vegas since 1950?
- Veggie Boy
I hope you're happy. I think this is the longest answer to any “ask the wizard” question. It has been rewritten many times, with the last rewrite on June 1, 2009.
Yes, this happened at the California casino. There is a plaque in the side of the building mentioning it.
According to
The Virgin Kiss by Frank Scoblete, Fujitake had 119 total rolls, including the seven out.
The following table shows the probability of being in any of the four possible states in craps before the nth roll. The states are defined as follows:
State 1 = Come out roll
State 2 = Point of 4 or 10
State 3 = Point of 5 or 9
State 4 = Point of 6 or 8
The probabilities are recursive. Let p(x,r) represent the probability of being in state x before roll r. Based on simple dice probabilities, p(x,r) can be expressed as follows:
(1) P(1,r) = (12/36)×p(1,r-1) + (3/36)×p(2,r-1) + (4/36)×p(3,r-1) + (5/36)× p(4,r-1)
(2) P(2,r) = (6/36)×p(1,r-1) + (27/36)×p(2,r-1)
(3) P(3,r) = (8/36)×p(1,r-1) + (26/36)×p(3,r-1)
(4) P(4,r) = (10/36)×p(1,r-1) + (25/36)×p(4,r-1)
In more plain simple English, equation (1) is saying that the probability of being in a come out roll before roll r is the sum of the following:
- Product of the probability of being in a come out roll the previous turn, and the probability of staying in a come out roll (12/36).
- Product of the probability of rolling for a 4 or 10 the previous roll, and the probability of making the point (3/36), resulting in a come out roll.
- Product of the probability of rolling for a 5 or 9 the previous roll, and the probability of making the point (4/36), resulting in a come out roll.
- Product of the probability of rolling for a 6 or 8 the previous roll, and the probability of making the point (5/36), resulting in a come out roll.
Equation (2) is saying the probability of rolling for a 4 or 10 before roll r is the sum of:
- Product of the probability of being in a come out roll the previous turn, and the probability of rolling a 4 or 10 (6/36).
- Product of the probability of rolling for a point of 4 or 10 the previous turn, and the probability of not rolling the desired point or a 7 (27/36).
Equation (3) is saying the probability of rolling for a 5 or 9 before roll r is the sum of:
- Product of the probability of being in a come out roll the previous turn, and the probability of rolling a 5 or 9 (8/36).
- Product of the probability of rolling for a point of 5 or 9 the previous turn, and the probability of not rolling the desired point or a 7 (26/36).
Equation (4) is saying the probability of rolling for a 6 or 8 before roll r is the sum of:
- Product of the probability of being in a come out roll the previous turn, and the probability of rolling a 6 or 8 (10/36).
- Product of the probability of rolling for a point of 6 or 8 the previous turn, and the probability of not rolling the desired point or a 7 (25/36).
That said, we can use a spreadsheet to recursively calculate the probability of each state for roll r, based on the probabilities for the previous state, r-1. We know that for roll 1 the probability is 1 for state 1, and 0 for the rest, because a shooter always starts with a come out roll. The following table shows the probabilities of each state for rolls 1 to 200.
| Probability States in Craps — Recursive Table |
| Roll |
State 1 |
State 2 |
State 3 |
State 4 |
Total |
Inverse of Total |
| 1 | 1 | 0 | 0 | 0 | 1 | 1 |
| 2 | 0.333333333333333 | 0.166666666666667 | 0.222222222222222 | 0.277777777777778 | 1 | 1 |
| 3 | 0.188271604938272 | 0.180555555555556 | 0.234567901234568 | 0.285493827160494 | 0.888888888888889 | 1.13 |
| 4 | 0.143518518518518 | 0.166795267489712 | 0.211248285322359 | 0.250557270233196 | 0.772119341563786 | 1.3 |
| 5 | 0.120010764365188 | 0.149016203703704 | 0.184461210181375 | 0.213864359472641 | 0.667352537722908 | 1.5 |
| 6 | 0.10262067837728 | 0.131763946838642 | 0.159891043878813 | 0.18185323973522 | 0.576128908829955 | 1.74 |
| 7 | 0.0882102876454065 | 0.115926406525195 | 0.138281460218538 | 0.154792716032036 | 0.497210870421176 | 2.01 |
| 8 | 0.0759275581209665 | 0.101646519501464 | 0.11947222963459 | 0.131997799368193 | 0.429044106625214 | 2.33 |
| 9 | 0.0653874492037588 | 0.0888894826462592 | 0.103158289874085 | 0.112756126817069 | 0.370191348541173 | 2.7 |
| 10 | 0.0563258786657103 | 0.0775650201853209 | 0.089033753621008 | 0.0964660461795646 | 0.319390698651604 | 3.13 |
| 11 | 0.0485297458312873 | 0.0675614115832757 | 0.0768190173186636 | 0.0826363872540616 | 0.275546561987288 | 3.63 |
| 12 | 0.041819421951951 | 0.058759349659338 | 0.0662647893593209 | 0.0708668649906781 | 0.237710425961288 | 4.21 |
| 13 | 0.0360417942997806 | 0.051039415903162 | 0.0571511083043875 | 0.0608296067857351 | 0.205061925293065 | 4.88 |
| 14 | 0.0310658957348077 | 0.0442865276440016 | 0.0492850880642311 | 0.0522543920178106 | 0.176891903460851 | 5.65 |
| 15 | 0.0267795178915465 | 0.0383925450221358 | 0.0424983182096798 | 0.0449171877164818 | 0.152587568839844 | 6.55 |
| 16 | 0.0230864183662804 | 0.0332576617485263 | 0.0366442337940013 | 0.038631246439653 | 0.131619560348461 | 7.6 |
| 17 | 0.0199039770282004 | 0.0287909827057748 | 0.031595595154841 | 0.0332401484626147 | 0.113530703351431 | 8.81 |
| 18 | 0.0171612165385602 | 0.0249105665340311 | 0.0272421469514297 | 0.0286123189402048 | 0.0979262489642258 | 10.2 |
| 19 | 0.0147971244603211 | 0.0215431276569501 | 0.0234884875846015 | 0.0246366705247422 | 0.0844654102266148 | 11.8 |
| 20 | 0.0127592272071339 | 0.0186235331527661 | 0.0202521575800613 | 0.0212191113256046 | 0.0728540292655659 | 13.7 |
| 21 | 0.0110023753581159 | 0.0160941877324302 | 0.017461942076074 | 0.0182797237558737 | 0.0628382289224939 | 15.9 |
| 22 | 0.0094877070716207 | 0.0139043700256753 | 0.0150563749123014 | 0.0157504679855001 | 0.0541989199950976 | 18.5 |
| 23 | 0.0081817620698106 | 0.0120095620311933 | 0.0129824278970223 | 0.0135732991764919 | 0.0467470511745181 | 21.4 |
| 24 | 0.0070557232889404 | 0.01037079853503 | 0.011194367274474 | 0.0116986138919557 | 0.0403195029904002 | 24.8 |
| 25 | 0.0060847670452792 | 0.0089540527827626 | 0.0096527593179958 | 0.010083960560786 | 0.0347755397068235 | 28.8 |
| 26 | 0.0052475056379875 | 0.0077296674279518 | 0.0083236077397257 | 0.0086929634575678 | 0.0299937442632328 | 33.3 |
| 27 | 0.0045255088385124 | 0.0066718348439618 | 0.007177606842688 | 0.0074944206338631 | 0.0258693711590253 | 38.7 |
| 28 | 0.0039028928092806 | 0.0057581276060567 | 0.0061894957949441 | 0.0064615445619917 | 0.0223120607722731 | 44.8 |
| 29 | 0.0033659667366465 | 0.0049690778394227 | 0.0053375009206331 | 0.0055713206150722 | 0.0192438661117744 | 52 |
| 30 | 0.0029029289198866 | 0.0042878028356747 | 0.0046028543841564 | 0.0048039634095353 | 0.016597549549253 | 60.2 |
| 31 | 0.0025036052813879 | 0.0036996736134038 | 0.0039693790374211 | 0.0041424548454791 | 0.014315112777692 | 69.9 |
| 32 | 0.0021592242942763 | 0.0031920227569509 | 0.0034231304784459 | 0.0035721506653016 | 0.0123465281949746 | 81 |
| 33 | 0.0018622231956239 | 0.0027538877834259 | 0.0029520885220501 | 0.0030804447104251 | 0.0106486442115249 | 93.9 |
| 34 | 0.0016060810927247 | 0.0023757863701734 | 0.0025458913093971 | 0.0026564819365796 | 0.0091842407088747 | 109 |
| 35 | 0.0013851751984362 | 0.0020495199597508 | 0.0021956061885034 | 0.0022909127594927 | 0.0079212141061831 | 126 |
| 36 | 0.001194656966999 | 0.0017680025028858 | 0.0018935322913494 | 0.0019756825269911 | 0.0068318742882253 | 146 |
| 37 | 0.0010303453586944 | 0.0015251113716642 | 0.0016330304253077 | 0.0017038509123547 | 0.0058923380680209 | 170 |
| 38 | 0.0008886348522869 | 0.0013155577551972 | 0.0014083764979876 | 0.0014694368443281 | 0.0050820059497998 | 197 |
| 39 | 0.0007664161585174 | 0.0011347741251124 | 0.0012146352157215 | 0.0012672852675297 | 0.004383110766881 | 228 |
| 40 | 0.0006610078743911 | 0.0009788166202539 | 0.0010475512465805 | 0.0010929525909283 | 0.0037803283321537 | 265 |
| 41 | 0.0005700975637338 | 0.0008442804442556 | 0.0009034554279506 | 0.0009426081532533 | 0.0032604415891933 | 307 |
| 42 | 0.0004916909604345 | 0.000728226593814 | 0.0007791839343496 | 0.0008129494296853 | 0.0028120509182834 | 356 |
| 43 | 0.0004240681720134 | 0.0006281184387662 | 0.0006720086104602 | 0.0007011290374021 | 0.0024253242586419 | 412 |
| 44 | 0.0003657459169253 | 0.0005417668577436 | 0.0005795769235575 | 0.0006046918793107 | 0.0020917815775371 | 478 |
| 45 | 0.0003154449629755 | 0.0004672827961286 | 0.0004998602041083 | 0.0005215210042228 | 0.0018041089674352 | 554 |
| 46 | 0.00027206204949 | 0.0004030362575923 | 0.0004311090280728 | 0.0004497909648702 | 0.0015559983000252 | 643 |
| 47 | 0.0002346456750916 | 0.0003476208681092 | 0.0003718147534948 | 0.0003879276282404 | 0.001342008924936 | 745 |
| 48 | 0.0002023752183502 | 0.0002998232635972 | 0.0003206763608777 | 0.0003345735404702 | 0.0011574483832953 | 864 |
| 49 | 0.0001745429321349 | 0.0002585966507563 | 0.0002765718647117 | 0.0002885580748682 | 0.0009982695224711 | 1002 |
| 50 | 0.0001505384158632 | 0.0002230379767564 | 0.0002385336649884 | 0.0002488716998071 | 0.0008609817574151 | 1161 |
| 51 | 0.0001298352244338 | 0.0001923682185445 | 0.0002057272949057 | 0.0002146437959391 | 0.0007425745338231 | 1347 |
| 52 | 0.000111979319671 | 0.0001659153679807 | 0.000177433096195 | 0.0001851235317449 | 0.0006404513155915 | 1561 |
| 53 | 0.0000965791106527 | 0.0001430997459307 | 0.0001530304182899 | 0.0001596633747315 | 0.0005523726496048 | 1810 |
| 54 | 0.0000832968642345 | 0.0001234213278901 | 0.0001319839933544 | 0.0001377048743004 | 0.0004764070597795 | 2099 |
| 55 | 0.0000718412972057 | 0.0001064488066233 | 0.0001138321872525 | 0.0001187664027737 | 0.0004108886938553 | 2434 |
| 56 | 0.0000619611874782 | 0.0000918101545018 | 0.0000981768679503 | 0.0001024325844833 | 0.0003543807944137 | 2822 |
| 57 | 0.0000534398640962 | 0.000079184480456 | 0.0000846746685148 | 0.0000883451801907 | 0.0003056441932578 | 3272 |
| 58 | 0.0000460904551538 | 0.0000682950043581 | 0.0000730294526154 | 0.0000761952262703 | 0.0002636101383975 | 3793 |
| 59 | 0.0000397517893537 | 0.0000589029957942 | 0.0000629858169231 | 0.000065716255786 | 0.0002273568578569 | 4398 |
| 60 | 0.0000342848612847 | 0.0000508025450712 | 0.0000543234876342 | 0.0000566784524496 | 0.0001960893464397 | 5100 |
| 61 | 0.0000295697828726 | 0.0000438160523509 | 0.0000468524880213 | 0.0000488836090024 | 0.0001691219322472 | 5913 |
| 62 | 0.0000255031541284 | 0.0000377903364086 | 0.0000404089708759 | 0.0000421607792719 | 0.0001458632406848 | 6856 |
| 63 | 0.0000219957955175 | 0.0000325932779945 | 0.0000348516243278 | 0.0000363625284189 | 0.0001258032262587 | 7949 |
| 64 | 0.0000189707922111 | 0.0000281109244155 | 0.0000300585721295 | 0.0000313616990457 | 0.0001085019878018 | 9216 |
| 65 | 0.0000163618073202 | 0.0000242449920134 | 0.0000259247003627 | 0.0000270486221737 | 0.00009358012187 | 10686 |
| 66 | 0.0000141116271167 | 0.0000209107118968 | 0.0000223593518886 | 0.0000233287118763 | 0.0000807104027784 | 12390 |
| 67 | 0.0000121709063341 | 0.0000180349717754 | 0.0000192843379455 | 0.0000201203907798 | 0.0000696106068348 | 14366 |
| 68 | 0.0000104970860282 | 0.0000155547132205 | 0.0000166322232571 | 0.0000173533009121 | 0.000060037323418 | 16656 |
| 69 | 0.0000090534602664 | 0.0000134155492534 | 0.0000143448470253 | 0.0000149667606413 | 0.0000517806171864 | 19312 |
| 70 | 0.000007808371174 | 0.0000115705719845 | 0.0000123720473552 | 0.0000129084338526 | 0.0000446594243664 | 22392 |
| 71 | 0.0000067345146868 | 0.000009979324184 | 0.0000106705611286 | 0.0000111331821682 | 0.0000385175821676 | 25962 |
| 72 | 0.0000058083417819 | 0.0000086069122525 | 0.0000092030751899 | 0.0000096020750298 | 0.0000332204042542 | 30102 |
| 73 | 0.0000050095420569 | 0.000007423241153 | 0.0000079374080332 | 0.0000082815359324 | 0.0000286517271755 | 34902 |
| 74 | 0.0000043205983316 | 0.0000064023545409 | 0.0000068458040366 | 0.00000714260608 | 0.000024711362989 | 40467 |
| 75 | 0.0000037264025041 | 0.0000055218656276 | 0.0000059043247668 | 0.0000061603093143 | 0.0000213129022128 | 46920 |
| 76 | 0.0000032139242381 | 0.0000047624663047 | 0.0000050923239991 | 0.0000053131043861 | 0.000018381818928 | 54402 |
| 77 | 0.0000027719252138 | 0.0000041075037682 | 0.0000043919949412 | 0.0000045824125565 | 0.0000158538364797 | 63076 |
| 78 | 0.0000023907126783 | 0.0000035426153618 | 0.0000037879797273 | 0.000003952210168 | 0.0000136735179354 | 73134 |
| 79 | 0.0000020619268882 | 0.0000030554136344 | 0.0000032670326204 | 0.0000034086772496 | 0.0000117930503925 | 84796 |
| 80 | 0.0000017783577858 | 0.0000026352147072 | 0.0000028177295343 | 0.0000029398944478 | 0.0000101711964751 | 98317 |
| 81 | 0.0000015337868869 | 0.0000022728039947 | 0.000002430217505 | 0.0000025355816404 | 0.0000087723900269 | 113994 |
| 82 | 0.0000013228509125 | 0.0000019602341438 | 0.0000020959986174 | 0.0000021868724966 | 0.0000075659561702 | 132171 |
| 83 | 0.0000011409241759 | 0.0000016906507599 | 0.0000018077436486 | 0.0000018861200428 | 0.0000065254386273 | 153246 |
| 84 | 0.0000009840171444 | 0.0000014581420993 | 0.0000015591313409 | 0.0000016267289675 | 0.0000056280195521 | 177682 |
| 85 | 0.0000008486889509 | 0.0000012576094319 | 0.0000013447097783 | 0.0000014030109897 | 0.0000048540191508 | 206015 |
| 86 | 0.000000731971938 | 0.0000010846552324 | 0.000001159776829 | 0.0000012100601181 | 0.0000041864641175 | 238865 |
| 87 | 0.0000006313065794 | 0.0000009354867473 | 0.0000010002770294 | 0.0000010436450648 | 0.0000036107154209 | 276953 |
| 88 | 0.000000544485351 | 0.0000008068328237 | 0.00000086271265 | 0.000000900116456 | 0.0000031141472806 | 321115 |
| 89 | 0.0000004696043212 | 0.0000006958721763 | 0.0000007440669919 | 0.000000776326803 | 0.0000026858702924 | 372319 |
| 90 | 0.0000004050213991 | 0.0000006001715191 | 0.0000006417382322 | 0.0000006695614802 | 0.0000023164926305 | 431687 |
| 91 | 0.0000003493203243 | 0.0000005176322058 | 0.0000005534823675 | 0.0000005774791943 | 0.0000019979140919 | 500522 |
| 92 | 0.0000003012796097 | 0.0000004464442084 | 0.0000004773640041 | 0.0000004980606417 | 0.000001723148464 | 580333 |
| 93 | 0.0000002598457546 | 0.0000003850464246 | 0.0000004117139163 | 0.0000004295642261 | 0.0000014861703216 | 672870 |
| 94 | 0.0000002241101424 | 0.0000003320924442 | 0.0000003550924406 | 0.0000003704878666 | 0.0000012817828938 | 780163 |
| 95 | 0.0000001932891149 | 0.0000002864210236 | 0.0000003062579054 | 0.0000003195360581 | 0.0000011055041019 | 904565 |
| 96 | 0.0000001667067878 | 0.0000002470306202 | 0.0000002641394016 | 0.0000002755914611 | 0.0000009534682707 | 1048803 |
| 97 | 0.0000001437802285 | 0.0000002130574298 | 0.0000002278132985 | 0.0000002376904002 | 0.0000008223413569 | 1216040 |
| 98 | 0.0000001240066729 | 0.0000001837564437 | 0.0000001964829886 | 0.0000002050017303 | 0.0000007092478355 | 1409944 |
| 99 | 0.0000001069525003 | 0.0000001584851116 | 0.0000001694614191 | 0.0000001768086107 | 0.0000006117076417 | 1634768 |
| 100 | 0.0000000922437241 | 0.0000001366892504 | 0.000000146156025 | 0.0000001524927853 | 0.0000005275817848 | 1895441 |
| 101 | 0.0000000795577908 | 0.0000001178908919 | 0.0000001260557345 | 0.0000001315210243 | 0.0000004550254414 | 2197679 |
| 102 | 0.0000000686165062 | 0.0000001016778007 | 0.0000001087197617 | 0.000000113433431 | 0.0000003924474996 | 2548112 |
| 103 | 0.0000000591799355 | 0.0000000876944349 | 0.0000000937679404 | 0.0000000978333566 | 0.0000003384756674 | 2954422 |
| 104 | 0.000000051041141 | 0.0000000756341487 | 0.0000000808723871 | 0.0000000843787019 | 0.0000002919263787 | 3425521 |
| 105 | 0.0000000440216443 | 0.0000000652324684 | 0.0000000697503109 | 0.0000000727744155 | 0.0000002517788391 | 3971740 |
| 106 | 0.0000000379675127 | 0.000000056261292 | 0.0000000601578122 | 0.0000000627660231 | 0.00000021715264 | 4605056 |
| 107 | 0.0000000327459831 | 0.0000000485238878 | 0.0000000518845338 | 0.0000000541340473 | 0.0000001872884521 | 5339357 |
| 108 | 0.0000000282425509 | 0.0000000418505797 | 0.0000000447490485 | 0.0000000466891949 | 0.0000001615313739 | 6190748 |
| 109 | 0.0000000243584588 | 0.0000000360950266 | 0.0000000385948797 | 0.000000040268205 | 0.0000001393165701 | 7177897 |
| 110 | 0.0000000210085314 | 0.0000000311310131 | 0.0000000332870706 | 0.0000000347302698 | 0.0000001201568849 | 8322453 |
| 111 | 0.0000000181193069 | 0.0000000268496817 | 0.0000000287092246 | 0.0000000299539461 | 0.0000001036321593 | 9649514 |
| 112 | 0.0000000156274266 | 0.0000000231571458 | 0.0000000247609526 | 0.0000000258344923 | 0.0000000893800172 | 11188183 |
| 113 | 0.0000000134782452 | 0.0000000199724304 | 0.0000000213556717 | 0.0000000222815714 | 0.0000000770879188 | 12972201 |
| 114 | 0.0000000116246327 | 0.000000017225697 | 0.0000000184187063 | 0.0000000192172705 | 0.0000000664863065 | 15040691 |
| 115 | 0.0000000100259406 | 0.0000000148567115 | 0.0000000158856507 | 0.0000000165743914 | 0.0000000573426942 | 17439013 |
| 116 | 0.0000000086471106 | 0.0000000128135238 | 0.0000000137009567 | 0.0000000142949775 | 0.0000000494565686 | 20219761 |
| 117 | 0.0000000074579059 | 0.0000000110513279 | 0.0000000118167156 | 0.0000000123290429 | 0.0000000426549923 | 23443915 |
| 118 | 0.0000000064322481 | 0.0000000095314803 | 0.000000010191607 | 0.0000000106334759 | 0.0000000367888112 | 27182178 |
| 119 | 0.0000000055476451 | 0.0000000082206515 | 0.0000000087899935 | 0.0000000091710938 | 0.000000031729384 | 31516527 |
| 120 | 0.0000000047846983 | 0.0000000070900962 | 0.0000000075811387 | 0.0000000079098277 | 0.0000000273657609 | 36542013 |
| 121 | 0.0000000041266767 | 0.0000000061150219 | 0.0000000065385331 | 0.0000000068220188 | 0.0000000236022505 | 42368841 |
| 122 | 0.0000000035591503 | 0.0000000052740458 | 0.0000000056393132 | 0.0000000058838121 | 0.0000000203563215 | 49124789 |
| 123 | 0.0000000030696738 | 0.0000000045487261 | 0.0000000048637596 | 0.0000000050746335 | 0.000000017556793 | 56958011 |
| 124 | 0.000000002647513 | 0.0000000039231569 | 0.000000004194865 | 0.0000000043767382 | 0.0000000151422731 | 66040283 |
| 125 | 0.0000000022834105 | 0.0000000033836198 | 0.0000000036179609 | 0.0000000037748218 | 0.0000000130598131 | 76570774 |
| 126 | 0.0000000019693816 | 0.0000000029182833 | 0.0000000031203964 | 0.0000000032556847 | 0.000000011263746 | 88780411 |
| 127 | 0.00000000169854 | 0.0000000025169427 | 0.0000000026912599 | 0.0000000028079426 | 0.0000000097146853 | 102936943 |
| 128 | 0.0000000014649461 | 0.000000002170797 | 0.0000000023211411 | 0.0000000024217768 | 0.000000008378661 | 119350812 |
| 129 | 0.0000000012634776 | 0.0000000018722555 | 0.0000000020019232 | 0.0000000020887189 | 0.0000000072263752 | 138381964 |
| 130 | 0.0000000010897163 | 0.0000000016147712 | 0.0000000017266062 | 0.0000000018014653 | 0.000000006232559 | 160447740 |
| 131 | 0.0000000009398517 | 0.0000000013926978 | 0.0000000014891526 | 0.0000000015537165 | 0.0000000053754185 | 186032027 |
| 132 | 0.0000000008105974 | 0.0000000012011653 | 0.000000001284355 | 0.0000000013400397 | 0.0000000046361574 | 215695871 |
| 133 | 0.000000000699119 | 0.0000000010359735 | 0.0000000011077225 | 0.0000000011557491 | 0.000000003998564 | 250089780 |
| 134 | 0.0000000006029718 | 0.0000000008935 | 0.0000000009553816 | 0.0000000009968032 | 0.0000000034486565 | 289967990 |
| 135 | 0.0000000005200473 | 0.0000000007706203 | 0.0000000008239915 | 0.0000000008597166 | 0.0000000029743757 | 336205003 |
| 136 | 0.0000000004485272 | 0.0000000006646398 | 0.0000000007106711 | 0.000000000741483 | 0.000000002565321 | 389814765 |
| 137 | 0.0000000003868429 | 0.0000000005732343 | 0.0000000006129351 | 0.0000000006395096 | 0.000000002212522 | 451972902 |
| 138 | 0.0000000003336419 | 0.0000000004943996 | 0.0000000005286405 | 0.0000000005515603 | 0.0000000019082422 | 524042501 |
| 139 | 0.0000000002877573 | 0.0000000004264067 | 0.0000000004559385 | 0.0000000004757063 | 0.0000000016458088 | 607604000 |
| 140 | 0.0000000002481832 | 0.0000000003677645 | 0.000000000393235 | 0.0000000004102842 | 0.0000000014194669 | 704489846 |
| 141 | 0.0000000002140515 | 0.0000000003171873 | 0.0000000003391549 | 0.0000000003538593 | 0.0000000012242529 | 816824679 |
| 142 | 0.0000000001846138 | 0.0000000002735657 | 0.0000000002925122 | 0.0000000003051944 | 0.000000001055886 | 947071928 |
| 143 | 0.0000000001592245 | 0.0000000002359432 | 0.0000000002522841 | 0.0000000002632221 | 0.000000000910674 | 1098087828 |
| 144 | 0.000000000137327 | 0.0000000002034948 | 0.0000000002175884 | 0.0000000002270222 | 0.0000000007854324 | 1273184054 |
| 145 | 0.0000000001184409 | 0.000000000175509 | 0.0000000001876643 | 0.0000000001958007 | 0.0000000006774148 | 1476200350 |
| 146 | 0.0000000001021522 | 0.0000000001513719 | 0.0000000001618555 | 0.0000000001688729 | 0.0000000005842525 | 1711588726 |
| 147 | 0.0000000000881036 | 0.0000000001305543 | 0.0000000001395961 | 0.0000000001456485 | 0.0000000005039024 | 1984511092 |
| 148 | 0.000000000075987 | 0.0000000001125996 | 0.000000000120398 | 0.000000000125618 | 0.0000000004346026 | 2300952450 |
| 149 | 0.0000000000655368 | 0.0000000000971142 | 0.0000000001038401 | 0.0000000001083422 | 0.0000000003748334 | 2667852146 |
| 150 | 0.0000000000565238 | 0.0000000000837585 | 0.0000000000895594 | 0.0000000000934423 | 0.0000000003232839 | 3093256045 |
| 151 | 0.0000000000487503 | 0.0000000000722395 | 0.0000000000772426 | 0.0000000000805916 | 0.0000000002788239 | 3586492968 |
| 152 | 0.0000000000420458 | 0.0000000000623047 | 0.0000000000666197 | 0.0000000000695081 | 0.0000000002404783 | 4158379268 |
| 153 | 0.0000000000362634 | 0.0000000000537361 | 0.0000000000574578 | 0.0000000000599489 | 0.0000000002074062 | 4821456027 |
| 154 | 0.0000000000312763 | 0.000000000046346 | 0.0000000000495558 | 0.0000000000517044 | 0.0000000001788824 | 5590264072 |
| 155 | 0.0000000000269749 | 0.0000000000399722 | 0.0000000000427406 | 0.0000000000445937 | 0.0000000001542814 | 6481662846 |
| 156 | 0.0000000000232652 | 0.000000000034475 | 0.0000000000368626 | 0.0000000000384609 | 0.0000000001330637 | 7515200125 |
| 157 | 0.0000000000200656 | 0.0000000000297338 | 0.0000000000317931 | 0.0000000000331715 | 0.0000000001147639 | 8713540685 |
| 158 | 0.0000000000173061 | 0.0000000000256446 | 0.0000000000274207 | 0.0000000000286095 | 0.0000000000989809 | 10102963329 |
| 159 | 0.000000000014926 | 0.0000000000221178 | 0.0000000000236496 | 0.000000000024675 | 0.0000000000853684 | 11713937159 |
| 160 | 0.0000000000128733 | 0.000000000019076 | 0.0000000000203972 | 0.0000000000212815 | 0.000000000073628 | 13581789749 |
| 161 | 0.0000000000111029 | 0.0000000000164526 | 0.000000000017592 | 0.0000000000183547 | 0.0000000000635022 | 15747481849 |
| 162 | 0.0000000000095759 | 0.0000000000141899 | 0.0000000000151727 | 0.0000000000158305 | 0.000000000054769 | 18258505628 |
| 163 | 0.000000000008259 | 0.0000000000122384 | 0.000000000013086 | 0.0000000000136534 | 0.0000000000472368 | 21169926149 |
| 164 | 0.0000000000071232 | 0.0000000000105553 | 0.0000000000112863 | 0.0000000000117757 | 0.0000000000407405 | 24545588905 |
| 165 | 0.0000000000061436 | 0.0000000000091037 | 0.0000000000097342 | 0.0000000000101562 | 0.0000000000351376 | 28459519907 |
| 166 | 0.0000000000052987 | 0.0000000000078517 | 0.0000000000083955 | 0.0000000000087595 | 0.0000000000303053 | 32997549029 |
| 167 | 0.0000000000045699 | 0.0000000000067719 | 0.0000000000072409 | 0.0000000000075548 | 0.0000000000261375 | 38259192197 |
| 168 | 0.0000000000039415 | 0.0000000000058406 | 0.0000000000062451 | 0.0000000000065158 | 0.0000000000225429 | 44359833703 |
| 169 | 0.0000000000033994 | 0.0000000000050373 | 0.0000000000053862 | 0.0000000000056197 | 0.0000000000194427 | 51433256511 |
| 170 | 0.0000000000029319 | 0.0000000000043446 | 0.0000000000046455 | 0.0000000000048469 | 0.0000000000167688 | 59634576023 |
| 171 | 0.0000000000025287 | 0.0000000000037471 | 0.0000000000040066 | 0.0000000000041803 | 0.0000000000144626 | 69143641656 |
| 172 | 0.0000000000021809 | 0.0000000000032318 | 0.0000000000034556 | 0.0000000000036054 | 0.0000000000124737 | 80168980822 |
| 173 | 0.000000000001881 | 0.0000000000027873 | 0.0000000000029803 | 0.0000000000031096 | 0.0000000000107582 | 92952371788 |
| 174 | 0.0000000000016223 | 0.000000000002404 | 0.0000000000025705 | 0.0000000000026819 | 0.0000000000092787 | 107774145717 |
| 175 | 0.0000000000013992 | 0.0000000000020734 | 0.000000000002217 | 0.0000000000023131 | 0.0000000000080026 | 124959334136 |
| 176 | 0.0000000000012068 | 0.0000000000017882 | 0.0000000000019121 | 0.000000000001995 | 0.000000000006902 | 144884796662 |
| 177 | 0.0000000000010408 | 0.0000000000015423 | 0.0000000000016491 | 0.0000000000017206 | 0.0000000000059528 | 167987485281 |
| 178 | 0.0000000000008977 | 0.0000000000013302 | 0.0000000000014223 | 0.000000000001484 | 0.0000000000051342 | 194774026407 |
| 179 | 0.0000000000007742 | 0.0000000000011473 | 0.0000000000012267 | 0.0000000000012799 | 0.0000000000044281 | 225831830862 |
| 180 | 0.0000000000006677 | 0.0000000000009895 | 0.000000000001058 | 0.0000000000011039 | 0.0000000000038191 | 261841975396 |
| 181 | 0.0000000000005759 | 0.0000000000008534 | 0.0000000000009125 | 0.0000000000009521 | 0.0000000000032939 | 303594138248 |
| 182 | 0.0000000000004967 | 0.000000000000736 | 0.000000000000787 | 0.0000000000008211 | 0.0000000000028409 | 352003916251 |
| 183 | 0.0000000000004284 | 0.0000000000006348 | 0.0000000000006788 | 0.0000000000007082 | 0.0000000000024502 | 408132903260 |
| 184 | 0.0000000000003695 | 0.0000000000005475 | 0.0000000000005854 | 0.0000000000006108 | 0.0000000000021132 | 473211970191 |
| 185 | 0.0000000000003187 | 0.0000000000004722 | 0.0000000000005049 | 0.0000000000005268 | 0.0000000000018226 | 548668257185 |
| 186 | 0.0000000000002748 | 0.0000000000004073 | 0.0000000000004355 | 0.0000000000004544 | 0.0000000000015719 | 636156469840 |
| 187 | 0.000000000000237 | 0.0000000000003513 | 0.0000000000003756 | 0.0000000000003919 | 0.0000000000013558 | 737595165784 |
| 188 | 0.0000000000002044 | 0.000000000000303 | 0.0000000000003239 | 0.000000000000338 | 0.0000000000011693 | 855208827359 |
| 189 | 0.0000000000001763 | 0.0000000000002613 | 0.0000000000002794 | 0.0000000000002915 | 0.0000000000010085 | 991576643015 |
| 190 | 0.0000000000001521 | 0.0000000000002254 | 0.000000000000241 | 0.0000000000002514 | 0.0000000000008698 | 1149689067183 |
| 191 | 0.0000000000001312 | 0.0000000000001944 | 0.0000000000002078 | 0.0000000000002168 | 0.0000000000007502 | 1333013398925 |
| 192 | 0.0000000000001131 | 0.0000000000001676 | 0.0000000000001792 | 0.000000000000187 | 0.000000000000647 | 1545569817470 |
| 193 | 0.0000000000000976 | 0.0000000000001446 | 0.0000000000001546 | 0.0000000000001613 | 0.000000000000558 | 1792019542040 |
| 194 | 0.0000000000000841 | 0.0000000000001247 | 0.0000000000001333 | 0.0000000000001391 | 0.0000000000004813 | 2077767049249 |
| 195 | 0.0000000000000726 | 0.0000000000001075 | 0.000000000000115 | 0.00000000000012 | 0.0000000000004151 | 2409078589640 |
| 196 | 0.0000000000000626 | 0.0000000000000928 | 0.0000000000000992 | 0.0000000000001035 | 0.000000000000358 | 2793219602342 |
| 197 | 0.000000000000054 | 0.00000000000008 | 0.0000000000000855 | 0.0000000000000892 | 0.0000000000003088 | 3238614041259 |
| 198 | 0.0000000000000466 | 0.000000000000069 | 0.0000000000000738 | 0.000000000000077 | 0.0000000000002663 | 3755029106716 |
| 199 | 0.0000000000000402 | 0.0000000000000595 | 0.0000000000000636 | 0.0000000000000664 | 0.0000000000002297 | 4353789433582 |
| 200 | 0.0000000000000346 | 0.0000000000000513 | 0.0000000000000549 | 0.0000000000000573 | 0.0000000000001981 | 5048025432896 |
To verify this table, I did a random simulation of over 21 billion new shooters. The following table shows the count for each number of throws. The average rolls per shooter was 8.53.
| Total Rolls in Craps Simulation |
| Rolls |
Count |
Probability |
| 2 | 2337166954 | 0.111113765998 |
| 3 | 2456226208 | 0.116774089950 |
| 4 | 2203680193 | 0.104767528430 |
| 5 | 1918801263 | 0.091223793049 |
| 6 | 1659906169 | 0.078915383142 |
| 7 | 1433725096 | 0.068162265665 |
| 8 | 1237906639 | 0.058852649948 |
| 9 | 1068528927 | 0.050800082105 |
| 10 | 922222110 | 0.043844352477 |
| 11 | 795811607 | 0.037834534896 |
| 12 | 686746351 | 0.032649346344 |
| 13 | 592513250 | 0.028169309214 |
| 14 | 511244058 | 0.024305603214 |
| 15 | 441056957 | 0.020968762813 |
| 16 | 380450121 | 0.018087388086 |
| 17 | 328223382 | 0.015604420557 |
| 18 | 283126061 | 0.013460400352 |
| 19 | 244241934 | 0.01161176828 |
| 20 | 210694371 | 0.010016847533 |
| 21 | 181697608 | 0.008638281259 |
| 22 | 156748704 | 0.0074521586 |
| 23 | 135198981 | 0.006427640059 |
| 24 | 116623267 | 0.005544512076 |
| 25 | 100580892 | 0.004781824284 |
| 26 | 86732484 | 0.004123442236 |
| 27 | 74831327 | 0.003557636541 |
| 28 | 64530253 | 0.003067902111 |
| 29 | 55658630 | 0.002646126747 |
| 30 | 48000095 | 0.002282024104 |
| 31 | 41403022 | 0.001968385566 |
| 32 | 35715570 | 0.001697992298 |
| 33 | 30804938 | 0.001464530665 |
| 34 | 26567244 | 0.001263061900 |
| 35 | 22912522 | 0.001089308833 |
| 36 | 19764940 | 0.000939666255 |
| 37 | 17049802 | 0.000810582961 |
| 38 | 14701128 | 0.000698922126 |
| 39 | 12682839 | 0.000602968480 |
| 40 | 10936628 | 0.000519949986 |
| 41 | 9430433 | 0.000448342350 |
| 42 | 8135964 | 0.000386800609 |
| 43 | 7015476 | 0.000333530284 |
| 44 | 6049888 | 0.000287624227 |
| 45 | 5220048 | 0.000248171912 |
| 46 | 4501337 | 0.000214002900 |
| 47 | 3881712 | 0.000184544642 |
| 48 | 3347205 | 0.00015913307 |
| 49 | 2887420 | 0.000137273937 |
| 50 | 2492557 | 0.000118501331 |
| 51 | 2150924 | 0.00010225939 |
| 52 | 1851857 | 0.000088041124 |
| 53 | 1599229 | 0.000076030665 |
| 54 | 1378541 | 0.000065538699 |
| 55 | 1189435 | 0.000056548208 |
| 56 | 1027756 | 0.000048861653 |
| 57 | 883491 | 0.000042002995 |
| 58 | 763197 | 0.000036283969 |
| 59 | 658592 | 0.00003131083 |
| 60 | 566426 | 0.000026929067 |
| 61 | 488581 | 0.000023228154 |
| 62 | 421952 | 0.000020060474 |
| 63 | 363167 | 0.000017265713 |
| 64 | 312455 | 0.000014854759 |
| 65 | 271042 | 0.000012885899 |
| 66 | 234287 | 0.00001113849 |
| 67 | 200619 | 0.000009537843 |
| 68 | 173758 | 0.000008260816 |
| 69 | 149132 | 0.000007090045 |
| 70 | 129798 | 0.000006170866 |
| 71 | 111607 | 0.000005306028 |
| 72 | 95569 | 0.000004543549 |
| 73 | 83244 | 0.000003957592 |
| 74 | 71524 | 0.000003400399 |
| 75 | 61671 | 0.000002931967 |
| 76 | 53346 | 0.000002536180 |
| 77 | 45909 | 0.000002182609 |
| 78 | 39773 | 0.000001890891 |
| 79 | 34436 | 0.000001637159 |
| 80 | 29357 | 0.000001395693 |
| 81 | 25364 | 0.000001205857 |
| 82 | 21759 | 0.000001034468 |
| 83 | 18926 | 0.000000899781 |
| 84 | 16250 | 0.000000772559 |
| 85 | 14085 | 0.00000066963 |
| 86 | 12153 | 0.000000577779 |
| 87 | 10348 | 0.000000491965 |
| 88 | 9106 | 0.000000432918 |
| 89 | 7727 | 0.000000367358 |
| 90 | 6824 | 0.000000324427 |
| 91 | 5846 | 0.000000277931 |
| 92 | 5008 | 0.000000238091 |
| 93 | 4244 | 0.000000201769 |
| 94 | 3730 | 0.000000177332 |
| 95 | 3144 | 0.000000149472 |
| 96 | 2868 | 0.000000136351 |
| 97 | 2378 | 0.000000113055 |
| 98 | 2076 | 0.000000098697 |
| 99 | 1739 | 0.000000082676 |
| 100 | 1552 | 0.000000073785 |
| 101 | 1346 | 0.000000063992 |
| 102 | 1150 | 0.000000054673 |
| 103 | 950 | 0.000000045165 |
| 104 | 841 | 0.000000039983 |
| 105 | 778 | 0.000000036988 |
| 106 | 618 | 0.000000029381 |
| 107 | 541 | 0.00000002572 |
| 108 | 441 | 0.000000020966 |
| 109 | 412 | 0.000000019587 |
| 110 | 361 | 0.000000017163 |
| 111 | 298 | 0.000000014168 |
| 112 | 259 | 0.000000012313 |
| 113 | 201 | 0.000000009556 |
| 114 | 188 | 0.000000008938 |
| 115 | 160 | 0.000000007607 |
| 116 | 160 | 0.000000007607 |
| 117 | 123 | 0.000000005848 |
| 118 | 122 | 0.000000005800 |
| 119 | 85 | 0.000000004041 |
| 120 | 62 | 0.000000002948 |
| 121 | 70 | 0.000000003328 |
| 122 | 60 | 0.000000002853 |
| 123 | 47 | 0.000000002234 |
| 124 | 34 | 0.000000001616 |
| 125 | 50 | 0.000000002377 |
| 126 | 36 | 0.000000001712 |
| 127 | 41 | 0.000000001949 |
| 128 | 30 | 0.000000001426 |
| 129 | 17 | 0.000000000808 |
| 130 | 16 | 0.000000000761 |
| 131 | 9 | 0.000000000428 |
| 132 | 14 | 0.000000000666 |
| 133 | 11 | 0.000000000523 |
| 134 | 17 | 0.000000000808 |
| 135 | 14 | 0.000000000666 |
| 136 | 8 | 0.00000000038 |
| 137 | 7 | 0.000000000333 |
| 138 | 7 | 0.000000000333 |
| 139 | 3 | 0.000000000143 |
| 140 | 5 | 0.000000000238 |
| 141 | 8 | 0.00000000038 |
| 142 | 4 | 0.00000000019 |
| 143 | 2 | 0.000000000095 |
| 144 | 2 | 0.000000000095 |
| 145 | 2 | 0.000000000095 |
| 146 | 4 | 0.000000000190 |
| 147 | 2 | 0.000000000095 |
| 148 | 3 | 0.000000000143 |
| 149 | 2 | 0.000000000095 |
| 150 | 2 | 0.000000000095 |
| 151 | 2 | 0.000000000095 |
| 152 | 1 | 0.000000000048 |
| 153 | 1 | 0.000000000048 |
| 155 | 1 | 0.000000000048 |
| 160 | 1 | 0.000000000048 |
| 161 | 1 | 0.000000000048 |
| 165 | 1 | 0.000000000048 |
| 166 | 1 | 0.000000000048 |
| 172 | 1 | 0.000000000048 |
| Total | 21034000000 | 1 |
It seems to me that the simulation confirms my recursive results in the first table.
According to the recursive table, the probability of Mr. Fujitake making it to the 119th roll is 1 in 31.5 million.
In 'The Virgin Kiss', Scoblete tells the story of a skilled dice thrower, by the handle of "the Captain," making 148 throws in Atlantic City (including the seven out), in July 2005. The exact date and casino are not given, that I can find. According to the recursive table, the probability of making it to the 148th roll, assuming random dice throws, is 1 in 2.3 billion.
As far as I know, the longest confirmed roll is by Patricia Demauro, set at the Borgata in Atlantic City on May 23, 2009 (source). Patricia held the dice for 4 hours and 20 minutes, for a total of 154 rolls. According to the recursive table, the probability of making it to the 154th roll is 1 in 5.6 billion.
Also see my solution expressed in matrices at mathproblems.info, problem 204.
My thanks to BruceZ for his help with this question.
I do not understand why you should lay the odds on the don't pass or don't come bets. It seems that you have already dodged the 7 and ll bullet, so the bet is now in your favor. Why would you dilute a bet that is already heavily in your
favor with a large (relative speaking)bet at true odds? It seems that you are working in the houses favor by reducing the house edge on the entire bet.
I understand that taking the odds on the pass side reduces the overall house edge, however I don't understand how laying the odds can reduce the house edge on the don't side. I'm very curious? By the way, I discussed this with several casino bosses and dealers yesterday and they all had opinions, but not reasons for these opinions. Thanks for your time.
- Mike
Let's say you have a $10 don't pass bet and the point is a 4. You have a 2/3 chance of winning the bet, so the expected value is (2/3)*$10 + (1/3)*-$10 =$ 10/3 = $3.33. Now consider adding a $40 odds bet on top of it. Now you have a 2/3 chance of winning $30 and a 1/3 chance of losing $50. The expected value of both bets combined is (2/3)*$30 + (1/3)*-$50 = $10/3 = $3.33. So either way your expected gain is 3 dollars and 33 cents. With the don't pass alone the player edge is $3.33/$10 = 33.33%. With the don't pass and odds the player edge is $3.33/$50 = 6.67%. So, yes, the player edge as a percentage drops by making the odds bet. However that player edge is effective over more money. The way I think gamblers should view the house edge is as the price to pay for entertainment. If you want to pay as little as possible then taking or laying the odds is getting entertainment for free.
After performing my own infinite deck analysis for Blackjack with the same rules as yours (dealer stands all 17s, re-splitting allowed to 4 hands except Aces, which can only be split once, doubling after splitting, draw only one
card to split Aces), I came across your site. In comparing expected values, I obtained the same numbers as you in all cases, except for pair splitting, which were slightly different. So I'm wondering how you went about your calculation of expected values for splitting?
It took me years to get the splitting pairs correct myself. Cindy of Gambling Tools was very helpful. Peter Griffin also addresses this topic in chapter 11 of the The Theory of Blackjack Let's say I want to determine the expected value of splitting eights against a dealer 2. Resplitting up to four hands is allowed. Here is how I did it.
- Take a 2 and two 8's out of the shoe.
- Determine the probability that the player will not get a third eight on either hand.
- Go through all ranks, except 8, subtract that card from the deck, play out a hand with that card and an 8, determine the expected value, and multiply by 2. For each rank determine the probability of that rank, given that the probability of another 8 is zero. Take the dot product of the probability and expected value over each rank.
- Multiply this dot product by the probability from step 2.
- Determine the probability that the player will resplit to 3 hands.
- Take another 8 out of the deck.
- Repeat step 3 but multiply by 3 instead of 2.
- Multiply dot product from step 7 by probability in step 5.
- Determine the probability that the player will resplit to 4 hands.
- Take two more 8's out of the shoe.
- Repeat step 3 but multiply by 4 instead of 2, and this time consider getting an 8 as a third card, corresponding to the situation where the player is forced to stop resplitting.
- Multiply dot product from step 11 by probability in step 9.
- Add values from steps 4, 8, and 12.
The hardest part of all this is step 3. I have a very ugly subroutine full of long formulas I determine using probability trees. It gets especially ugly when the dealer has a 10 or ace up.
Eight golfers went to a new course. The caddy master put 8 bags on four carts at random. The golfers put 8 marked golf balls in a hat. The balls were thrown in the air. The 2 closes balls to each other were partners. In every case the partners' golf bags were already on the same cart. What is the probability of that the golf bags were paired up correctly before the throw?
The formulaic answer for the number of combinations would be combin(8,2)*combin(6,2)*combin(4,2)/fact(4) = 25*15*6/24 = 105. Another way to solve the number of combinations would be to take one golfer at random. There are 7 possible people to pair him with. Then pick another golfer at random from the six left. There are 5 possible people to pair him with. Then pick another golfer at random from the four left. There are 3 possible people to pair him with. So the number of combination is 7*5*3 = 105. Thus the answer is 1 in 105.
©1998-2010 Wizard Of Odds Consulting, Inc. All rights reserved.
Privacy/Terms
Contact
Advertise
About Us
Links
|