Ques: How much is 80% of 45 is greater than 4/5 of 25?
Options:
(A) 15
(B) 57
(C) 16
(D) 16
(E) 73
Ans: (C)
CoT: (80/100) * 45 (4/5) * 25
36 - 20 = 16

Ques: Find 95 98
Options:
(A) 93/198
(B) 93/12
(C) 93/13
(D) 93/10
(E) 93/11
Ans: (D)
CoT: Here both numbers are less than 100. So they are deficient of - 5 and - 2 compared with 100. So

Ques: A train traveling at 72 kmph crosses a platform in 30 seconds and a man standing on the platform in 16 seconds. What is the length of the platform in meters?
Options:
(A) 240 meters
(B) 360 meters
(C) 280 meters
(D) 600 meters
(E) Cannot be determined
Ans: (C)
CoT: Speed of the train in metres/sec = 72000/3600 = 20
Distance travelled by train to cross the platform = 30 * 20 = 600 = Length of train + Length of platform
Distance travelled by train to cross the man = 16 * 20 = 320 = Length of train
Length of platform = 600 - 320 = 280

Ques: If f(x) = x^4/(x^4 - 1), what is f(1/x) in terms of f(x)?
Options:
(A) f(x)
(B) 1/-f(x)
(C) -2/-f(x)
(D) -3/-f(x)
(E) -f(x)
Ans: (E)
CoT: If x = 2 then f(x) = 16/15 and f(1/x) = -16/15 which is equal to -f(x)