100+ Probability Questions for Bank PO, SO, Clerk Exams - 1

Question: 1

In a simultaneous throw of two dice, what is the probability of getting a total of 7?

(A) $${1}/{2}$$

(B) $${1}/{6}$$

(C) $${2}/{3}$$

(D) $${3}/{4}$$

Question: 2

Tickets numbered 1 to 20 are mixed up and then a ticket is drawn at random. What is the probability that the ticket drawn has a number which is a multiple of 3 or 5?

(A) $${1}/{2}$$

(B) $${2}/{5}$$

(C) $${9}/{20}$$

(D) $${10}/{20}$$

Question: 3

From a pack of 52 cards, one card is drawn at random. What is the probability that the card drawn is a ten or a spade?

(A) $${1}/{4}$$

(B) $${1}/{13}$$

(C) $${1}/{26}$$

(D) $${4}/{13}$$

Question: 4

An urn contains 6 red, 4 blue, 2 green and 3 yellow marbles. If three marbles are picked up at random, what is the probability that 2 are blue and 1 is yellow?

(A) $${1}/{5}$$

(B) $${7}/{15}$$

(C) $${3}/{91}$$

(D) $${18}/{455}$$

Question: 5

A box contains 20 electric bulbs, out of which 4 are defective. Two balls are chosen at random from this box. The probability that at least one of them is defective is

(A) $${4}/{19}$$

(B) $${7}/{19}$$

(C) $${12}/{19}$$

(D) $${21}/{95}$$