Rationale: All numbers except 54 is multiple of 5.
The answer: (C)
Question: Which is odd one
10, 25, 45, 54, 60, 75, 80
Options:
(A) 10
(B) 45
(C) 54
(D) 60
(E) 75

Reasoning: Sum of 18 even numbers = 18 * 19 = 342
Average = 342/18 = 19
Ans: (A)
Question: The average of first 18 even numbers is?
Options:
(A) 19
(B) 18
(C) 16
(D) 11
(E) 17

Rationale: If x = 2 then f(x) = 16/31 and f(1/x) = -16/31 which is equal to -f(x)
The answer: (D)
Question: If f(x) = x^4/(x^5 - 1), what is f(1/x) in terms of f(x)?
Options:
(A) f(x) 
(B) 2*f(x) 
(C) 1/f(x) 
(D) -f(x) 
(E) 2/f(x) 

Reasoning: (80/100) * 40 â€“ (4/5) * 15
32 - 12 = 20
Ans: (B)
Question: How much is 80% of 40 is greater than 4/5 of 15?
Options:
(A) 12
(B) 20
(C) 18
(D) 12
(E) 81

Rationale: T = 288/32 = 9 h
T = 9 - 3 = 6
Time Ratio = 9:6 = 3:2
Speed Ratio = 2:3
The answer: (D)
Question: A motorcyclist goes from Bombay to Pune, a distance of 288 kms at an average of 32 kmph speed. Another man starts from Bombay by car 2 ½ hours after the first, and reaches Pune ½ 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) 2:3
(E) 1:8

Rationale: Work done by X in 1 day = 1/18
Work done by Y in 1 day = 1/15
Work done by Y in 10 days = 10/15 = 2/3
Remaining work = 1 – 2/3 = 1/3
Number of days in which X can finish the remaining work = (1/3) / (1/18) = 6
The answer: (C)

Question: X can finish a work in 18 days. Y can finish the same work in 15 days. Yworked for 10 days and left the job. how many days does X alone need to finish the remaining work?
Options:
(A) 3
(B) 5
(C) 6
(D) 8
(E) 9