Waec Model Questions Vol1 2025 Biology Question 9
Practice objective / multiple choice question 9 from the 2025 Waec Model Questions Vol1 Biology examination.
A couple attempts to conceive. During the first three months each month the probability of conception is 15 %. If conception has not occurred, during the next three months each month the probability rises to 25 %. Assuming independence of monthly attempts, what is the probability that the couple will conceive at least once within the six‑month period? Express your answer as a decimal rounded to three places.
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About This Question
This is Waec Model Questions Vol1 2025 Biology Question 9. It is one of the objective questions from the 2025 Waec Model Questions Vol1 Biology examination.
Difficulty level: Medium .
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