What amount does Kiran get if he invests Rs. 18000 at 15% p.a. simple interest for four years?
Options:
(A) 28800
(B) 24800
(C) 24400
(D) 20000
(E) None
Answer and stream of consciousness: (A)
Stream of consciousness: Simple interest = (18000 * 4 * 15)/100 = Rs. 10800
Amount = P + I = 18000 + 10800 = Rs. 28800

What is the least number should be added to 1056, so the sum of the number is completely divisible by 29?
Options:
(A) 17
(B) 27
(C) 37
(D) 47
(E) 57
Answer and stream of consciousness: (A)
Stream of consciousness: (1056 / 29) gives remainder 12
17 + 12 = 29, So we need to add 17

Two trains run in opposite directions on a circular track. Train A travels at a rate of 4 miles per hour and Train B runs at a rate of 6 miles per hour. If the track has a radius of 6 miles and the trains both start from Point S at the same time, how long, in hours, after the trains depart will they again meet at Point S?
Options:
(A) 3
(B) 6
(C) 9
(D) 18
(E) 22
Answer and stream of consciousness: (B)
Stream of consciousness: The trains will travel the perimeter of the circle which is 12 miles. The relative speed of the trains is 2 miles per hour. Time taken to meet = 12/2 = 6 hours

John has 10pairs of dark blue socks and 10pairs of black socks. He keeps them all in the same bag. If he picks out 3socks at random, then what is the probability thathe will get a matching pair?
Options:
(A) 0
(B) 1
(C) 2
(D) 3
(E) 4
Answer and stream of consciousness:
(B)
Stream of consciousness: If he draws any combination of 3 socks he will definitely have the matching pair of either colour.