question: A train running at the speed of 90 km/hr crosses a pole in 10 seconds. Find the length of the train.
Options:
(A) 150
(B) 180
(C) 250
(D) 200
(E) 225
answer: Stream of consciousness: Speed = 90*(5/18) m/sec = 25 m/sec
Length of Train (Distance) = Speed * Time
25 *10 = 250 meter The answer is (C).

q: A train is running at a speed of 40 km/hr and it crosses a post in 18 seconds. What is the length of the train?
Options:
(A) 190 metres
(B) 160 metres
(C) 180 metres
(D) 120 metres
(E) 200 metres
a: Stream of consciousness: Speed of the train, v = 40 km/hr = 40000/3600 m/s = 400/36 m/s
Time taken to cross, t = 18 s
Distance Covered, d = vt = (400/36) 18 = 200 m
Distance covered is equal to the length of the train = 200 m The answer is (E).

question: Rose's grade was 70th percentile of the 60 grades for her class. Of the 40 grades from another class, 16 were higher than Rose's, and the rest were lower. If no other grade was the same as Rose's grade, then Rose's grade was what percentile of the grades of the two classes of two classes combined?
Options:
(A) 66th
(B) 70th
(C) 74th
(D) 82nd
(E) 85th
answer: Stream of consciousness: 66th/70th/74th/82nd/85th The answer is (A).

q: Calculate the circumference of a circular field whose radius is 8 centimeters.
Options:
(A) 18 cm
(B) 1 cm
(C) 8 cm
(D) 19 cm
(E) 28 cm
a: Stream of consciousness: Circumference C is given by
C = 2r = 2*9 = 18 cm The answer is (A).

question: A bullet train 140 m long is running at 60 kmph. In how much time will it pass a platform 210 m long?
Options:
(A) 34 Seconds
(B) 22 Seconds
(C) 21 Seconds
(D) 24 Seconds
(E) 29 Seconds
answer: Stream of consciousness: Distance travelled = 140 + 210m = 350m
Speed = 60 * 5/8 = 50/3m
Time = 350 * 3/50 = 21 Seconds The answer is (C).

question: 7528:5306::4673:?
Options:
(A) 2351
(B) 2451
(C) 2551
(D) 2651
(E) 2751
answer:
Stream of consciousness: As there is a difference of 2222. 7528-2222 = 5306. so 4673-2222 = 2451 The answer is (B).