science
posted by chinthaka on .
A pair of fair dice is tossed once. If the sum of the two numbers is greater than 9, the probability that one of the numbers is a 6 =

Knowing that the sum is greater than 9, there are only 4 possibilities:
46
55
56
66
Looks like p=3/4 
Rolling two standard 6sided dice, there is 1 way to get a sum of 12, 2 ways to get a sum of 11, and 3 ways to get a sum of 10. Thatâ€™s 6 out 36 possible outcomes for a probability of 1/6.