The game of blackjack is played with a deck consisting of 13 cards (one of each of the numbers 2-10, one jack, one queen, one king, and one of ace) in each of four suits: clubs, diamonds, hearts, and spades.
In a game of blackjack, if your first card is a spade, what are the odds that it is an ace?
Options:
(A) 1/52
(B) 1/26
(C) 1/13
(D) 1/4
(E) 5/13

There are 13 spades, the probability that the spade we already have is an ace is therefore 1/13. So the answer is: (C).

Which of the following is not divisible by 8?
Options:
(A) 10032
(B) 21192
(C) 47816
(D) 91232
(E) 72034

Divisibility rule of 8: Last three digits of the number should be divisible by 8
Option A: 10032, last three digits = 032. Divisible by 8
Option B: 21192, last three digits = 192. Divisible by 8
Option C: 47816, last three digits = 816. Divisible by 8
Option D: 91232, last three digits = 232. Divisible by 8
Option E: 72034, last three digits = 034. Not divisible by 8. Hence 72034 is not divisible by 8 So the answer is: (E).

A train 150 m long running at 72 kmph crosses a platform in 25 sec. What is the length of the platform?
Options:
(A) 338
(B) 277
(C) 350
(D) 881
(E) 271

D = 72 * 5/18 = 25 = 500 – 150 = 350 So the answer is: (C).

An seller earns an income of Re 3 on the first day of his business. On every subsequent day, he earns an income which is just thrice of that made on the previous day. On the 15th day of business, he earns an income of:
Options:
(A) 19
(B) 22
(C) 25
(D) 20
(E) 36


2nd day he earns = 3(2 – 3)
3rd day he earns = 3(3 – 3)
On 15th day he earns 3(15 -3) = 36 rupees So the answer is: (E).