If two dice are rolled once and one die rolled a second time if the first two rolls have same number, what is the probability of getting a sum of 14?
1 Answer
Nov 7, 2015
Work backwards, then determine the probabilities
Explanation:
If the sum is 14, then possible values for the second roll (given that the first two are equal) and the value of the first rolls:
(First double, Second single)
(6-6,2)
(5-5,4)
(4-4,6)
P(two 6's then a 2)
Same probability for the other two outcomes.
Total probability
hope that helped
