The average of eight results is 37 and that of the first seven is 40. The eighth result is?
Options:
(A) 25
(B) 30
(C) 12
(D) 37
(E) 16
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8 * 37 7 * 40 = 16 So the answer is: (E).
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A train 360 m long is running at a speed of 36 km/hr. In what time will it pass a bridge 140 m long?
Options:
(A) 40 sec
(B) 50 sec
(C) 88 sec
(D) 19 sec
(E) 10 sec
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Speed = 36 * 5/18 = 10 m/sec
Total distance covered = 360 + 140 = 500 m
Required time = 500 * 1/10 = 50 sec So the answer is: (B).
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A no.when divided by 281 gives a remainder 160, what remainder will be obtainedby dividingthe same no.21?
Options:
(A) 21
(B) 22
(C) 23
(D) 24
(E) 25
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281 + 160 = 441/21 = 21 (Remainder) So the answer is: (A).
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