Probability

Probability Practice Questions

Probability Practice Questions section is here and we have collected all the different question types for you. The Probability Practice Questions has questions that will check your grasp on the concepts of probability and also provide you with the crucial practice opportunity. Let us see more.

Probability Practice Questions

Part A

Q1: In a throw of a coin, the probability of getting a head is?

A) 1            B) 1/2                 C) 1/4                    D) 2

Q2: Two unbiased coins are tossed. What is the probability of getting at most one head?

A) 2/3       B) 1/2             C) 3/4             D) 4/3

Q3: An unbiased die is tossed. Find the probability of getting a multiple of 3.

A) 1/4            B) 1/3               C) 1/2           D) 1

Q4: In a simultaneous throw of a pair of dice, find the probability of getting a total more than 7.

A) 3/2           B) 4/7            C) 5/12           D) 6/13

Q5: A bag contains 6 white and 4 black balls. two balls are drawn at random. Find the probability that they are of the same color.

A) 3/4         B) 5/3           C) 7/15             D) 8/17

Q6: Two dice are thrown together. What is the probability that the sum of the numbers on the two faces is divisible by 4 or 6?

A) 13/14         B) 5/3           C) 7/16             D) 7/18

Q7: Two cards are drawn at random from a pack of 52 cards. What is the probability that either both are black or both are queens?

A) 5/21       B) 55/221              C) 555/2221          D) 5555/22221

Q8: A box contains 5 green, 4 yellow and 3 white marbles. Three marbles are drawn at random. What is the probability that they are not of the same color?           [Bank P.O. 2000]

A) 3/44          B) 3/55           C) 52/55           D) 41/44

Q9: A bag contains 4 white, 5 red, and 6 blue balls. Three balls are drawn at random from the bag. The probability that all of them are red is:      [M.B.A. 2002]

A) 1/22           B) 3/22        C) 2/91             D) 2/77

Find Your Answers Here

Q1: B), Q2: C), Q3: B), Q4: C), Q5: C), Q6: D), Q7: B), Q8: D), Q9: C)

Part B

Q1: A bag contains 2 red, 3 green, and 2 blue balls. two balls are drawn at random. What is the probability that none of the balls drawn is blue?             [Bank PO 2003]

A) 10/21          B) 11/21         C) 2/7           D) 5/7

Q2: A bag contains 6 white and 4 red balls. Three balls are drawn at random. What is the probability that one ball is red and the other two are white?

A) 1/2            B) 1/12          C) 3/10            D) 7/12

Q3: In a box, there are 8 red, 7 blue, and 6 green balls. One ball is picked up randomly. What is the probability that it is neither red nor green?            [Bank P.O. 2002]

A) 2/3          B) 3/4             C) 7/19           D) 8/21          E) 9/21

Q4: A box contains 10 black and 10 white balls. The probability of drawing two balls of the same color is:

A) 9/19         B) 9/38           C) 10/19          D) 5/19

Q5: A box contains 4 red balls, 5 green balls, and 6 white balls. A ball is drawn at random from the box. What is the probability that the ball is drawn is either red or green?

A) 2/5       B0 3/5         C) 1/5          D) 7/15

Q6: In a class, there are 15 boys and 10 girls. Three students are selected at random. The probability that 1 girl and 2 boys are selected, is:

A) 21/46               B) 25/117            C) 1/50             D) 3/25

Q7: Four persons are chosen at random from a group of 3 men, 2 women, and 4 children. The chance that exactly 2 of them are children, is:

A) 1/9               B) 1/5            C) 1/12              D) 10/21

Probability Practice Questions

Find Your Answers Here

Q1: A), Q2: A), Q3: D), Q4: A), Q5: B), Q6: A), Q7: D)

Part C

Q1: A box contains 20 electric bulbs, out of which 4 are defective. Two bulbs are chosen at random from this box. the probability that at least one of these is defective is:

A) 4/19          B) 7/19         C) 12/19        D) 21/95

Q2: In a class, 30% of the students offered English, 20% offered Hindi and 10% offered both. If a student is selected at random, what is the probability that he has offered English or Hindi?

A) 2/5            B) 3/4                  C) 3/5                  D) 3/10

Q3: Two dice are tossed. the probability that a total score is a prime number is:

A) 1/6          B) 5/12            C) 1/2              D) 7/9

Q4: A speaks the truth in 75% of cases and B in 80% of the cases. In what percentage of cases are they likely to contradict each other, narrating the same incident?    [Bank PO 2000]

A) 5%            B) 15%           C) 35%           D) 45%

Q5: A man and his wife appear in an interview for two vacancies in the same post. The probability of husband’s selection is (1/7) and the probability of wife’s selection is (1/5). What is the probability that only one of them is selected?

A) 4/5          B) 2/7               C) 8/15            D) 4/7

Q6: 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) 4/13            B) 1/4         C) 1/13         D) 1/26

Q7: The probability that a card drawn from a pack of 52 cards will be a diamond or a king is:

A) 2/13          B) 4/13      C) 1/13            D) 1/52

Q8: From a pack of 52 cards, two cards are drawn together at random. What is the probability of both the cards being kings?        [M.B.A. 2002, Railways, 2002]

A) 1/15           B) 25/57            C) 35/256            D) 1/221

Q9: Two cards are drawn together from a pack of 52 cards. The probability that one is spade and one is a heart is:            [MBA 2000]

A) 3/20          B) 29/34            C) 47/100       D) 13/102

Find Your Answers Here

Q1: B), Q2: A), Q3: B), Q4: C), Q5: B), Q6: A), Q7: B), Q8: D), Q9: D)

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