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Old 08-05-2007   #1
largebones2004
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Default What is the probability of two tens being rolled before a 7?

I have found a betting system for ****s that counts on two tens being rolled before a seven is rolled. I know that there are no winning betting system, but I was just curious on the odds with this system.
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Old 08-05-2007   #2
cpcericola
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well for a ten to be rolled it would be ether a 6-4, 5-5, or 4-6. so that is 3 out of 36 which turns out to be 1/12 so for two tens thats 1/144. then the seven is ether 1-6, 2-5, 3-4, 4-3, 5-2, or 6-1. Which is 6 out of 36 so 1/6. Now 1/144 times 1/6 is 1/864 so out of 864 sets of three one will probaly be 10-10-7.
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Old 08-05-2007   #3
Nataly V
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I would say in previous case the probability is 3/36 * 3/35 * 6/34 = 1/793.(3)
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