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Hi Jeremy, Here is a more formal argument with the same result. As Steve says the probability of rolling a 5 is 4/36 and the probability of rolling ian 11 is 2/36 so the probability of rolling neither is 1  (2/36 + 4/36) = 30/36. So how can you roll a 5 before an 11?
The pattern continues so the probability you roll a 5 before an 11 is
This is 4/36 times a geometric series with a = 1 and r = 30/36. Thus the probability you roll a 5 before an 11 is
Harley  


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