Some persons can do a piece of work in 12 days. Two times the number of these people will do half of that work in?
Options:
(A) 3
(B) 4
(C) 5
(D) 6
(E) 8

12/ (2 * 2) = 3 days So the answer is: (A).

Find the odd man out
253, 136, 352, 323, 631, 244
Options:
(A) 323
(B) 136
(C) 352
(D) 631
(E) 531

The sum all three digits comes to 10 except 323 So the answer is: (A).

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

Using question number 11 and 12, we get the probability as
1 - (1/36 + 5/9) = 5/12 So the answer is: (B).

A motorcyclist goes from Bombay to Pune, a distance of 256 kms at an average of 32 kmph speed. Another man starts from Bombay by car 2 hours after the first, and reaches Pune hour earlier. What is the ratio of the speed of the motorcycle and the car?
Options:
(A) 1:2
(B) 1:5
(C) 1:4
(D) 1:1
(E) 5:8
T = 256/32 = 8 h
T = 8 - 3 = 5
Time Ratio = 8:5
Speed Ratio = 5:8 So the answer is: (E).