question: The inverse ratio of 3: 2: 1 is?
Options:
(A) 2:3:7
(B) 2:3:9
(C) 2:3:2
(D) 2:3:6
(E) 2:3:1
answer: Stream of consciousness: 1/3: 1/2: 1/1 = 2:3:6 The answer is (D).
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question: In how many different number of ways 6 men and 2 women can sit on a shopa which can accommodate persons?
Options:
(A) 200
(B) 1680
(C) 240
(D) 250
(E) 260
answer: Stream of consciousness: 8p4 = 8 X 7 6 5 = 1680 The answer is (B).
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question: Anitha had 80 currency notes in all, some of which are of Rs 95 denomination and the remaining of Rs 45 denomination. The total amount of all these currency notes was Rs. 4000. How much amount (in Rs) did she have in the denomination of Rs 45?
Options:
(A) 3500
(B) 72
(C) 2000
(D) 3000
(E) 4000
answer: Stream of consciousness: Let the number of 45-rupee notes = x
Then, the number of 95-rupee notes = (80 x)
45x + 95(80 x) = 4000 or x + 2(80 x) = 95 or x = 72. The answer is (B).
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question: An analyst will recommend a combination of 2 industrial stocks, 2 transportation stocks, and 2 utility stocks. If the analyst can choose from 5 industrial stocks, 4 transportation stocks, and 3 utility stocks, how many different combinations of 6 stocks are possible?
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Options:
(A) 12
(B) 19
(C) 60
(D) 180
(E) 720
answer:
Stream of consciousness: 5C2 * 4C2 * 3C2 = 10*6*3 = 180. The answer is (D).
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