A pair of dice is cast. What is the probability that the sum of the two number landing uppermost is less than 5, if it is known that the sum of the numbers falling uppermost is less than 7?

Answer 1

Combination of 5 = 1,4 - 4,1 - 3,2 or 2,3

Less than seven includes combinations that = 1, 2, 3, 4, 5 or 6.

Calculate the latter combinations and divide the number of those combinations into the former.

Answer 2

7/15