question: John has 10pairs of dark blue socks and 10pairs of black socks. He keeps them all in the same bag. If he picks out 3socks at random, then what is the probability thathe will get a matching pair?
Options:
(A) 1
(B) 3
(C) 4
(D) 5
(E) 6
answer: Stream of consciousness: If he draws any combination of 3 socks he will definitely have the matching pair of either colour. The answer is (A).

q: The floor of a rectangular room is 17 m long and 12 m wide. The room is surrounded by a veranda of width 2 m on all its sides. The area of the veranda is :
Options:
(A) 124 m2
(B) 132 m2
(C) 148 m2
(D) 152 m2
(E) None of these
a: Stream of consciousness: Area of the outer rectangle = 21 16 = 336 m2
Area of the inner rectangle = 17 12 = 204 m2
Required area = (336 204) = 132 m2 The answer is (B).

question: Find the value of y from (12)^3 x 6^4 432 = y?
Options:
(A) 3484
(B) 3467
(C) 3567
(D) 4567
(E) 5184
answer: Stream of consciousness: Given Exp. = (12)3 x 64 = (12)3 x 64 = (12)2 x 62 = (72)2 = 5184
432 12 x 62 The answer is (E).

q: In what time will a railway train 50 m long moving at the rate of 36 kmph pass a telegraph post on its way?
Options:
(A) 5 sec
(B) 4 sec
(C) 3 sec
(D) 6 sec
(E) 1 sec
a: Stream of consciousness: T = 50/36 * 18/5 = 5 sec The answer is (A).

question: Look at this series: 664, 332, 340, 170, ____, 89, ... What number should fill the blank?
Options:
(A) 85
(B) 97
(C) 109
(D) 178
(E) 112
answer: Stream of consciousness: Answer: Option D
This is an alternating division and addition series: First, divide by 2, and then add 8. The answer is (D).

question: Rajani has to read a book of 445 pages. She has already read the first 157 pages of the book and if she reads 24 pages of the book everyday then how long will she take now to complete the book?
Options:
(A) 25 days
(B) 20 days
(C) 46 days
(D) 21 days
(E) None of these
answer:
Stream of consciousness: Remaining pages to read = 445 157 = 288
Reqd. number of days = 28824 = 12 The answer is (E).