Question

There are 100 students in a college class of which 36 are boys studying History and 13 girls not studying History. If there are 55 girls in all, then the probability that a boy picked up at random is not studying History is
(a) 3/5
(b) 2/5
(c) 1/5
(d) 4/5
(e) None of these

Answer 1

Here is the answer....

Boys are not studying history = 8.
Pe = 8/100 = 1/5_____ANS

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