A family has 2 children. Given that at least one of them is a boy, what is the probability that both are boys?
A family has 2 children. Given that at least one of them is a boy, what is the probability that both are boys?
- A. 1/2
- B. 1/4
- C. 1/3
- D. 2/3
Answer: C) 1/3
Explanation: Sample space = {BB, BG, GB, GG}. At least one boy = {BB, BG, GB}. Favourable (both boys) = {BB}. Probability = 1/3.
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