WAEC Mathematics 2022 Objective — Question 43
Question 43 of 50 from the West African Examinations Council (WAEC) Mathematics 2022 Objective paper, with the correct answer and a full explanation.
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A local community has two newspapers: The Morning Times and The Evening Dispatch. The Morning Times is read by 45% of households and the Evening Dispatch by 60%. If 20% of households read both papers, find the probability that a particular household reads at least one paper.
- A. 0.45
- B. 0.65
- C. 0.85Correct
- D. 0.95
Explanation
P(at least one) = P(M)+P(E)−P(both) = 0.45+0.60−0.20 = 0.85.
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