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Out of 25 applicants 13 boys and 12 girls. Two persons are to be selected for the job. Find the probability that at least one of the selected persons will be a boy.
32/50
42/50
39/50
28/50
13C1*12C1/25C2 + 13C2 *12C0/25C2 =13*12/25*12 + 13*6*1/25*12 =13/25 + 13/50==> 39/50.
Hence, option 3 is the correct answer.
By: Amit Kumar ProfileResourcesReport error
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