A. 21/25
B. 17/25
C. 4/25
D. 8/25
✅ The correct answer is option B. 17/25.
Probability MCQs
Three 6 faced dice are thrown together. The probability that exactly two dice show the same number on them is -.
A. 5/9
B. 5/12
C. 1/36
D. 7/12
✅ The correct answer is option B. 5/12.
A box contains nine bulbs out of which 4 are defective. If four bulbs are chosen at random, find the probability that at least one bulb is good.
A. 6/63
B. 2/63
C. 125/126
D. 1/126
✅ The correct answer is option C. 125/126.
Three 6 faced dice are thrown together. The probability that no two dice show the same number on them is__________?
A. 7/12
B. 5/9
C. 1/36
D. 5/12
✅ The correct answer is option B. 5/9.
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. 4/9
B. 5/9
C. 7/9
D. 8/9
✅ The correct answer is option B. 5/9.
A box contains nine bulbs out of which 4 are defective. If four bulbs are chosen at random, find the probability that all the four bulbs are defective.
A. 62/63
B. 125/126
C. 1/63
D. 1/126
✅ The correct answer is option D. 1/126.
A box contains 3 blue marbles, 4 red, 6 green marbles and 2 yellow marbles. If four marbles are picked at random, what is the probability that none is blue?
A. 17/91
B. 33/91
C. 51/91
D. 65/91
✅ The correct answer is option B. 33/91.
Out of 15 consecutive numbers, 2 are chosen at random. The probability that they are both odds or both primes is_________?
A. 10/17
B. 10/19
C. 46/105
D. Cannot be determined
✅ The correct answer is option D. Cannot be determined.
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. 3/22
B. 4/21
C. 2/21
D. 1/14
✅ The correct answer is option C. 2/21.
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. 1/455
B. 2/455
C. 1/91
D. 4/455
✅ The correct answer is option A. 1/455.