Probability Questions and Answers



Home > Numerical Tests > Probability > Probability Questions



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. 8/15
D. 9/20

View Answer

Answer & Explanation:

Answer: Option D

Explanation: Here, S = {1, 2, 3, 4, ...., 19, 20}.

Let E = event of getting a multiple of 3 or 5 = {3, 6 , 9, 12, 15, 18, 5, 10, 20}.

P(E) = n(E)/n(S) = 9/20.





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?


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

View Answer

Answer & Explanation:

Answer: Option A

Explanation:

Probability Questions and Answers





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?


A. 1/3
B. 3/4
C. 7/19
D. 8/21
E. 9/21

View Answer

Answer & Explanation:

Answer: Option A

Explanation:

Probability Questions and Answers





What is the probability of getting a sum 9 from two throws of a dice?


A. 1/6
B. 1/8
C. 1/9
D. 1/12

View Answer

Answer & Explanation:

Answer: Option C

Explanation:

Probability Questions and Answers




Three unbiased coins are tossed. What is the probability of getting at most two heads?


A. 3/4
B. 1/4
C. 3/8
D. 7/8

View Answer

Answer & Explanation:

Answer: Option D

Explanation:

Probability Questions and Answers




Page 1   | Page 2   | Page 3  



Leave comments and discuss the questions above here.


There are no comments yet!


Sorry, you need javascript enabled to post any comments.
Copyright © The Online Test Centre 2005-2012 | Terms and Conditions | Links | Blog


The largest provider of tests on the web. We have thousands of questions covering

 

numerical and verbal aptitude tests, diagrammatic and logic tests, reasoning tests,

 

puzzles, general knowledge test questions and GMAT test advice and questions.

 

No login required. All tests are free. All the tests you need when you need them.