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In a group of 14 boys and x number of girls, the probability of choosing a girl is 3/5. If we have to select two students, find the probability that atleast one of them is boy.
11/17
Probability of choosing a girl = 3/5 x/(14+x) = 3/5 => x = 21 Required Probability = [14C1 * 21C1 + 14C2]/(14+21)C2 = 11/17
Hence, option 4 is the correct answer.
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