q: Which one of the following is not a prime number?
Options:
(A) 31
(B) 61
(C) 71
(D) 73
(E) 91
a: Stream of consciousness: 91 is divisible by 7. So, it is not a prime number. The answer is (D).

question: The length E of a rectangle is decreased by 15% and its width is increased by 40%. Does the area of the rectangle decrease or increase and by what percent?
Options:
(A) Decreases by 19%
(B) Decreases by 25%
(C) Increases by 6%
(D) Increases by 19%
(E) Increases by 25%
answer: Stream of consciousness: Let the length E of the rectangle be 100x, and width be 100y. Area = 100x * 100y = 10000xy
Now after the change Length = 85x, and width = 140 y. Area = 11900xy
% Change = (11900xy - 10000xy)/(10000xy) = 19 % Increase. Hence The answer is (D).

q: A no. when divided by the sum of 555 and 445 gives 2times their difference as quotient & 20 as remainder. Find the no. is?
Options:
(A) 122456
(B) 220020
(C) 220022
(D) 235467
(E) 220026
a: Stream of consciousness: (555 + 445) * 2 * 110 + 20 = 220000 + 20 = 220020 The answer is (B).

question: The average of first six prime numbers greater than 3 is?
Options:
(A) 16
(B) 10
(C) 12
(D) 19
(E) 17.8
answer: Stream of consciousness: 5 + 7 +11 + 13 + 17 + 19 = 72/6 = 12 The answer is (C).

q: A 240 meter long train crosses a man standing on the platform in 6 sec. What is the speed of the train?
Options:
(A) 228
(B) 144
(C) 1266
(D) 188
(E) 211
a: Stream of consciousness: S = 240/6 * 18/5 = 144 kmph The answer is (B).

q: What percent is 150 of 90?
Options:
(A) 133 1/3 %
(B) 166 2/3 %
(C) 135 1/3 %
(D) 140 1/3 %
(E) 143 1/3 %
a:
Stream of consciousness: 150/90 = 5/3
5/3 100 = 500/3 = 166 2/3 % The answer is (B).