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A bag contains 3 white, 6 red, 5 blue identical balls. A ball is picked...

Mathematics
WAEC 1997

A bag contains 3 white, 6 red, 5 blue identical balls. A ball is picked at random from bag. What is the probability that is either white or blue?
  • A. 9/14
  • B. 4/7
  • C. 3/7
  • D. 5/14
  • E. 3/14
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Correct Answer: Option B
Explanation
P(W or B) = 3/14 + 5/14 = 4/7

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Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
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Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
Post UTME Past Questions Agent