q: In how many different ways could couples be picked from 8 men and 5 women?
Options:
(A) 8
(B) 5
(C) 13
(D) 40
(E) 20
a: Stream of consciousness: Number of mens = 8
Number of womens = 5
Different ways could couples be picked = 8c1 * 5c1 = 8 * 5 = 40 ways The answer is (D).

question: In what time will a railway train 60 m long moving at the rate of 36 kmph pass a telegraph post on its way?
Options:
(A) 10 sec
(B) 8 sec
(C) 5 sec
(D) 6 sec
(E) 11 sec
answer: Stream of consciousness: T = 60/36 * 18/5 = 6 sec The answer is (D).

q: Which one of the following is not a prime number?
Options:
(A) 2
(B) 3
(C) 5
(D) 9
(E) 7
a: Stream of consciousness: 9 is divisible by 3. So, it is not a prime number. The answer is (D).

question: Find the C.I. on a sum of Rs.1600 for 9 months at 20% per annum, interest being compounded quarterly?
Options:
(A) 2266
(B) 7767
(C) 2522
(D) 1677
(E) 2671
answer: Stream of consciousness: A = 1600(21/20)3 = 2522 The answer is (C).

q: In wardrobe Marry has 3trousers. One of them is grey the 2nd blue and the 3rd brown. In his wardrobe he also has 4shirts. One of them is grey and the other 3are white. He openshiswardrobe in the dark and pick out one shirt trouser pair without examination the color. What is the likelihood that neither the shirt nor the trouser is grey?
Options:
(A) 1/2
(B) 2/3
(C) 3/5
(D) 4/7
(E) 4/9
a: Stream of consciousness: Probability that trouser is not grey = 2/3
Probability that shirt is not grey = 3/4
Required probability = 2/3 x 3/4 = 1/2 The answer is (A).

q: In a school of 850 boys, 44% of Muslims, 28% Hindus, 10% Sikhs and the remaining of other communities. How many belonged to the other communities?
Options:
(A) 125
(B) 627
(C) 153
(D) 721
(E) 159
a:
Stream of consciousness: 44 + 28 + 10 = 82%
100 82 = 18%
850 * 18/100 = 153 The answer is (C).