JAMB Mathematics 2020 Objective — Question 9

Question 9 of 40 from the Joint Admissions and Matriculation Board (JAMB) Mathematics 2020 Objective paper, with the correct answer and a full explanation.

A bag contains 4 white balls and 6 red balls. Two balls are taken from the bag without replacement. What is the probability that they are both red?

A. 1/3Correct
B. 2/9
C. 1/5
D. 2/15

Explanation

White balls=4, Red balls=6, Total=10. Without replacement: P(2 red)=(6/10)x(5/9)=30/90=1/3.

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