WAEC Mathematics 2003 Question 24

Question 24

Probability

Out of 60 members of an Association, 15 are Doctors and 9 are Lawyers. If a member is selected at random from the Association, what is the probability that the member is neither a Doctor nor a Lawyer?

A.3/5
B.9/10
C.3/20
D.1/4

Show the answer and explanation

Answer: A (3/5)

Explanation

Assuming no one is both, 60 − 24 = 36 members are neither: 36/60 = 3/5.