In the Pascal family, each child has at least 2 brothers and at least 1 sister. What is the smallest possible number of children in this family?
(A) 3
(B) 4
(C) 5
(D) 6
(E) 7
Since each child has at least 2 brothers, then each boy has at least 2 brothers. So there have to be at least 3 boys.

Since each child has at least 1 sister, then each girl has at least 1 sister. So there have to be at least 2 girls.

Therefore, the Pascal family has at least 5 children.

Answer: (C)