An analyst will recommend a combination of 3 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 7 stocks are possible?
Options:
(A) 12
(B) 19
(C) 60
(D) 180
(E) 720
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5C3 * 4C2 * 3C2 = 10*6*3 = 180. So the answer is: (D).
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A train 250 m long, running with a speed of 50 km/hr will pass a tree in?
Options:
(A) 18sec
(B) 20sec
(C) 25sec
(D) 30sec
(E) 1min
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Speed = 50 * 5/18 = 125/9 m/sec
Time taken = 250 *9/125 = 18 sec So the answer is: (A).
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A, B, C together started a business. A invested Rs.6000 for 5 months B invested Rs.3600 for 6 months and C Rs.7500 for 3 months. If they get a total profit of Rs.7410. Find the share of A?
Options:
(A) 2999
(B) 3000
(C) 2777
(D) 2999
(E) 17212
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60*5:36*6:75*3
100: 72: 75
100/247 * 7410 = 3000 So the answer is: (B).
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