question: In what time will a railway train 120 m long moving at the rate of 70 kmph pass a telegraph post on its way?
Options:
(A) 3 sec
(B) 4 sec
(C) 5 sec
(D) 6 sec
(E) 7 sec
answer: Stream of consciousness: T = 120/70 * 18/5 = 6 sec The answer is (D).

q: 137+276=435 how much is 731+672?
Options:
(A) 534
(B) 1403
(C) 1623
(D) 1513
(E) 1613
a: Stream of consciousness: 137-731 and 276-672 similarly 435-534 The answer is (A).

question: How long does a train 100 m long traveling at 72 kmph takes to cross a tunnel of 1400 m in length?
Options:
(A) 70 sec
(B) 60sec
(C) 82 sec
(D) 75 sec
(E) 62 sec
answer: Stream of consciousness: D = 1400+100 = 1500 m
S = 72 * 5/18 = 20
T = 1500 * 1/20 = 75 sec The answer is (D).

q: Amar takes as much time in running 18 meters as a car takes in covering 48 meters. What will be the distance covered by Amar during the time the car covers 1.8 km?
Options:
(A) 660 m
(B) 650 m
(C) 570 m
(D) 670 m
(E) 680 m
a: Stream of consciousness: Distance covered by Amar = (18/48)*1800 = 670 m The answer is (D).

question: There are 39 distinct numbers in set M, there are 28 distinct numbers in set N, and there are 12 distinct numbers that are in both sets M and N. Set H is the set containing the elements that are in at least one of sets M and N. How many elements are in set H?
Options:
(A) 39
(B) 40
(C) 55
(D) 58
(E) 63
answer: Stream of consciousness: {Total} = {M} + {N} - {Both}
{Total} = 39 + 28 - 12 = 55. The answer is (C).

question: A pipe can fill a cistern in 12 minutes whereas the cistern when fill can be emptied by a leak in 18 minutes. When both pipes are opened, find when the cistern will be full?
Options:
(A) 17
(B) 16
(C) 70
(D) 36
(E) 12
answer:
Stream of consciousness: 1/12 - 1/18 = 1/36
36 minutes The answer is (D).