Post-UTME Mathematics 2010 Objective — Question 3
Question 3 of 10 from the Post-UTME Screening (Post-UTME) Mathematics 2010 Objective paper, with the correct answer and a full explanation.
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The probability of an event P is ¾ while that of another event Q is 1/6. If the probability of both P and Q is 1/12, what is the probability of either P or Q?
- A. 1/96
- B. 1/8
- C. 5/6Correct
- D. 11/12
Explanation
P(P∪Q)=P(P)+P(Q)-P(P∩Q) = 3/4+1/6-1/12 = 9/12+2/12-1/12 = 10/12 = 5/6.
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