question:Find the least number must be subtracted from 899830 so that remaining no.is divisible by 16?
Options:
(A) 5
(B) 8
(C) 7
(D) 6
(E) 9
answer:(D)
Stream of consciousness:On dividing 899830 by 16 we get the remainder 6, so 6 should be subtracted

question:What will come in place of the x in the following Number series? 68, 36, 20, 12, 8, x
Options:
(A) 6
(B) 4
(C) 2
(D) 1
(E) 0
answer:(A)
Stream of consciousness:68
68 / 2 + 2 = 36
36 / 2 + 2 = 20
20 / 2 + 2 = 12
12 / 2 + 2 = 8
8 / 2 + 2 = 6

question:If n is an integer, then the least possible value of |48 - 7n| is?
Options:
(A) 1
(B) 0
(C) 5
(D) 4
(E) 2
answer:
(A)
Stream of consciousness:|48 - 7n| represents the distance between 48 and 7n on the number line. Now, the distance will be minimized when 7n, which is multiple of 7, is closest to 48. Multiple of 7 which is closest to 48 is 49 (for n = 7), so the least distance is 1: |48 - 49| = 1.