passwella.
Menu

JAMB Mathematics 1994 Question 50

Question 50

Probability

In a survey, it was observed that 20 students read newspapers and 35 read novels. If 40 of the students read either newspapers or novels, what is the probability of the students who read both newspapers and novels?

  1. A.½
  2. B.⅔
  3. C.3/8
  4. D.3/11
Show the answer and explanation

Answer: C (3/8)

Explanation

Students reading both = 20 + 35 − 40 = 15. As a fraction of the 40 students: 15/40 = 3/8.