A class consists of 100 students, 25 of them are girls and 75 boys; 20 of them are rich and remaining poor; 30 of them are fair complexioned. The probability of selecting a fair complexioned rich girl is\nOptions:\n(A) 3/200\n(B) 1/59\n(C) 1/56\n(D) 1/54\n(E) 1/53 Hmmm, my stream of consciousness:
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The probability of selecting girl is: 25/100 = 1/4\nThe probability of selecting rich is: 20/100 = 1/5\nThe probability of selecting fair complexioned is: 30/100 = 3/10\nThree are independent;probability of rich and fair complexioned girl is:\n(1/4) Ã—(1/5) Ã— (3/10) = 3/200 So, the answer is (A).
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