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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:

  1. 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).
  2. 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.
  3. 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.
  4. 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:

  1. 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).
  2. 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:

  1. 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).
  2. 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:

  1. 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).
  2. 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.

  1. Take a 2 and two 8's out of the shoe.
  2. Determine the probability that the player will not get a third eight on either hand.
  3. 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.
  4. Multiply this dot product by the probability from step 2.
  5. Determine the probability that the player will resplit to 3 hands.
  6. Take another 8 out of the deck.
  7. Repeat step 3 but multiply by 3 instead of 2.
  8. Multiply dot product from step 7 by probability in step 5.
  9. Determine the probability that the player will resplit to 4 hands.
  10. Take two more 8's out of the shoe.
  11. 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.
  12. Multiply dot product from step 11 by probability in step 9.
  13. 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.

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