A box contains 3 blue marbles, 4 red, 6 green marbles and 2 yellow marbles. If three marbles are picked at random, what is the probability that they are all blue ?
A. 4/455
B. 34
C. 2/455
D. 1/455
Probability Mcqs
Probability MCQs with answers for competitive exams. Probability and statistics MCQs for test preparations. Math MCQs range from basic to advanced levels, providing preparation for tests.
A box contains 3 blue marbles, 4 red, 6 green marbles and 2 yellow marbles. If two marbles are picked at random, what is the probability that they are either blue or yellow ?
A. 1/14
B. 2/21
C. 3/22
D. 4/21
A bag contains five white and four red balls. Two balls are picked at random from the bag. What is the probability that they both are different color ?
A. 5/9
B. 8/9
C. 5/9
D. 7/9
Out of 15 consecutive numbers, 2 are chosen at random. The probability that they are both odds or both primes is ______ ?
A. 10/19
B. 46/105
C. 10/17
D. Cannot be determined
What is the probability that a leap year has 53 Sundays and 52 Mondays ?
A. 2/7
B. 5/7
C. 1/7
D. 0
10 books are placed at random in a shelf. The probability that a pair of books will always be together is _____ ?
A. 1/5
B. 3/10
C. 1/10
D. 9/10
Probability of a lottery ticket being a prized ticket is 0.2. When 4 tickets are purchased, the probability of winning a prize on at least one ticket is ______ ?
A. 0.6234
B. 0.5834
C. 0.5904
D. 0.4869
In a party there are 5 couples. Out of them 5 people are chosen at random. Find the probability that there are at the least two couples ?
A. 9/14
B. 16/21
C. 5/21
D. 5/14
Probability that A speaks truth is 3/5 and that of B speaking truth is 4/7. What is the probability that they agree in stating the same fact ?
A. 17/35
B. 19/35
C. 18/35
D. 12/35
Out of 10 persons working on a project, 4 are graduates. If 3 are selected, what is the probability that there is at least one graduate among them ?
A. 5/6
B. 3/8
C. 1/6
D. 5/8