question: In a school of 700 boys, 44% of Muslims, 28% Hindus, 10% Sikhs and the remaining of other communities. How many belonged to the other communities?
Options:
(A) 173
(B) 126
(C) 153
(D) 143
(E) 133
answer: Stream of consciousness: 44 + 28 + 10 = 82%
100 82 = 18%
700 * 18/100 = 126 The answer is (B).

q: Let the second number be 3x, so that the first number is 6x and the third number is 2x.
Options:
(A) 22
(B) 77
(C) 98
(D) 27
(E) 36
a: Stream of consciousness: 6x + 3x + 2x = 132 x = 12. Second number = 3x = 312 = 36. The answer is (E).

question: A can do a piece of work in 3 hours; B and C together can do it in 2 hours, which A and B together can do it in 2 hours. How long will C alone take to do it?
Options:
(A) 2hours
(B) 5hours
(C) 6hours
(D) 4hours
(E) 3hours
answer: Stream of consciousness: A's 1 hour work = 1/3;
(B + C)'s 1 hour work = 1/2;
(A + B)'s 1 hour work = 1/2
(A + B + C)'s 1 hour work = (1/3 + 1/2) = 5/6
C's 1 hour work = (5/6 - 1/2) = 1/3
C alone will take 3 hours to do the work. The answer is (E).

q: A train running at the speed of 120 km/hr crosses a pole in 9 seconds. Find the length of the train.
Options:
(A) 100 meter
(B) 150 meter
(C) 200 meter
(D) 250 meter
(E) 300 meter
a: Stream of consciousness: Speed = 120*(5/18) m/sec = 200/6 m/sec
Length of Train (Distance) = Speed * Time
(200/6) * 9 = 300 meter The answer is (E).

question: 100 white and black tiles will be used to form a 20x20 square pattern. If there must be at least one black tile in every row and at least one white tile in every column, what is the maximum difference between the number of black and white tiles that can be used?
Options:
(A) 75
(B) 80
(C) 85
(D) 70
(E) 95
answer: Stream of consciousness: Answer = D
Please refer diagram below
80 - 10 = 70 The answer is (D).

question: Three 6 faced dice are thrown together. The probability that exactly two dice show the same number on them is
Options:
(A) 5/54
(B) 5/12
(C) 5/17
(D) 5/18
(E) 5/14
answer:
Stream of consciousness: Using question number 11 and 12, we get the probability as
1 - (1/36 + 5/9) = 5/12 The answer is (B).