q: The edge of a cube is 3a cm. Find its surface?
Options:
(A) 24a8
(B) 24a4
(C) 24a1
(D) 54a2
(E) 24a7
a: Stream of consciousness: 6a2 = 6 * 3a * 3a = 54a2 The answer is (D).

question: Four of the following five parts lettered a, b, c, d and e are exactly equal. Which of the following is not equal to the other four?
Options:
(A) 24(2) 12(2) + 112 14
(B) 17 12 + 59 4
(C) 15 28 + 20
(D) 27 16 + 56 8
(E) 185 6 2 23 5
answer: Stream of consciousness: Other parts are equal to 440. The answer is (D).

q: In a class if 1 is absent the rest of them can be divided into 6 equal groups and if two are absent can be divided into 7 equal groups. Find the minimum number of students in the class
Options:
(A) 35
(B) 36
(C) 37
(D) 38
(E) 39
a: Stream of consciousness: Multiple of 6 and 7 with difference 1 are 36 and 35
So the number of students in the class is 37 The answer is (C).

question: In what time a sum of money double itself at 3% per annum simple interest?
Options:
(A) 33 1/8%
(B) 33 1/3%
(C) 83 1/3%
(D) 33 4/3%
(E) 73 1/3%
answer: Stream of consciousness: P = (P*3*R)/100
R = 33 1/3% The answer is (B).

q: A train 540 meters long is running with a speed of 54 kmph. The time taken by it to cross a tunnel 180 meters long is?
Options:
(A) 22
(B) 27
(C) 48
(D) 99
(E) 23
a: Stream of consciousness: D = 540 + 180 = 720
S = 54 * 5/18 = 15 mps
T = 720/15 = 48 se The answer is (C).

q: How long does a train 110 m long traveling at 60 kmph takes to cross a bridge of 390 m in length?
Options:
(A) 18.9 sec
(B) 88.9 sec
(C) 22.9 sec
(D) 30.00 sec
(E) 72.0 sec
a:
Stream of consciousness: D = 110 + 390 = 500 m
S = 60 * 5/18 = 50/3
T = 500 * 3/50 = 30 sec The answer is (D).