45 pupil,out of them 12 in debate only and 22 in singing only.then how many in both?
Options:
(A) 9
(B) 10
(C) 11
(D) 12
(E) 13 Think first, then make a decision. Some random thoughts:
The intersection for two = 45 - 12 - 22 = 11 play both games. So the answer is (C).