Anil can do a work in 15 days while Sunil can do it in 25 days. How long will they take if both work together?
Options:
(A) 9 3/6
(B) 9 3/4
(C) 9 3/8
(D) 5 3/2
(E) 9 3/2
Answer and stream of consciousness: (C)
Stream of consciousness: 1/15 + 1/25 = 8/75
75/8 = 9 3/8 days

A number when divided by 221 gives a remainder 43, what remainder will be obtained by dividing the same number 17?
Options:
(A) 11
(B) 10
(C) 9
(D) 8
(E) 7
Answer and stream of consciousness: (C)
Stream of consciousness: 221 + 43 = 264/17 = 9 (Remainder)

Find the odd man out 8,27, 64,216,,512,1000
Options:
(A) 216
(B) 512
(C) 64
(D) 8
(E) 27
Answer and stream of consciousness: (E)
Stream of consciousness: 27 is cube of 3 which is odd number where as all others are cubes of even numbers.

A and B together can do a work in 6 days. If A alone can do it in 15 days. In how many days can B alone do it?
Options:
(A) 7
(B) 13
(C) 19
(D) 10
(E) None
Answer and stream of consciousness:
(D)
Stream of consciousness: 1/6 1/15 = 1/10
B can do the work in 10 days