Posted by Matt on .
Harry has 3 sisters amd 5 brothers. His sister Harriet has a S sisters and B brothers. What is the product of S and B?
(A) 8
(B) 10
(C) 12
(D) 15
(E) 18

Calculus 
Ms. Sue,
Harriet must have 2 sisters and 5 brothers. 2 * 5 = ?