Question

Find X's age which equals the number of grand children of a man who has 4 sons and 4 daughters. Each daughter of the man's wife have 3 sons and 4 daughters and each son of the man's wife have 4 sons and 3 daughters

a) 56
b) 53
c) 43
d) none of these

Answer 1

Answer: Option A

Explanation :

Given, he had 4 sons and 4 daughters.

Each son has 4 sons and 3 daughters and each daughter has 3 sons and 4 daughters.

Therefore total number of grandsons = 4x4 + 4x3 = 16 + 12 = 28

And total number of grand daughters = 4x3 + 4x4 = 28

Total number of grandchildren is 28+28 = 56.