JAMB Mathematics 1994 Question 7

Question 7

Sets

In a science class of 42 students, each student offers at least one of Mathematics and Physics. If 22 students offer Physics and 28 students offer Mathematics, find how many students offer Physics only?

A.6
B.8
C.12
D.14

Show the answer and explanation

Answer: D (14)

Explanation

Students taking both = 22 + 28 − 42 = 8. Physics only = 22 − 8 = 14.