question:The compound ratio of 2/3, 6/7, 1/3 and 1/9 is given by?
Options:
(A) 7/98
(B) 1/48
(C) 4/189
(D) 1/96
(E) 1/68
answer:(C)
Stream of consciousness:2/3 * 6/7 * 1/3 * 1/9 = 12/567 = 4/189


question:The average of first four prime numbers greater than 50 is?
Options:
(A) 50
(B) 57
(C) 89
(D) 56
(E) 60
answer:(E)
Stream of consciousness:53 + 59 + 61 + 67 = 240/4 = 60


question:Find the least number must be subtracted from 427398 so that remaining no.is divisible by 15?
Options:
(A) 3
(B) 4
(C) 6
(D) 9
(E) 8
answer:
(A)
Stream of consciousness:On dividing 427398 by 15 we get the remainder 3, so 3 should be subtracted