Three balls are drawn one after the other with replacement, from a bag containing 5
MATHEMATICS
WAEC 1992
Three balls are drawn one after the other with replacement, from a bag containing 5 red, 9white and 4 blue identical balls, What is the probability that they are one red, one white and one blue?
- A. 5/102
- B. 5/136
- C. 5/162
- D. 5/204
Correct Answer: C. 5/162
Explanation
Total number of balls = 18
P(1R, 1W, 1B) = 5/18 x 9/18 x 4/18 = 5/162
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