Correct Answer - Option 1 : C
Given: Four sons and an unmarried daughter live with their parents. A son has a daughter and a son. Each of the other sons has 2 daughters.
3 sons has 2 daughter,
Therefore number of female = 6
One son has one daughter and one son,
Number of female = 1
Four sons and an unmarried daughter live with their parents,
So, total number of female = 6 + 1 + 1+ 1 = 9
Hence, number female member are 9.