Most important Basic Probability MCQs with Answers for mathematics and statistics test online preparation.
Basic Probability MCQs
The probability that a number selected at random from the first 50 natural numbers is a composite number is _____?
A. 21/25
B. 17/25
C. 4/25
D. 8/25
A coin is tossed live times. What is the probability that there is at the least one tail?
A. 31/32
B. 1/16
C. 1/2
D. 1/32
If a number is chosen at random from the set {1, 2, 3, …., 100}, then the probability that the chosen number is a perfect cube is _____?
A. 1/25
B. 1/2
C. 4/13
D. 1/10
Out of first 20 natural numbers, one number is selected at random. The probability that it is either an even number or a prime number is ______?
A. 1/2
B. 16/19
C. 4/5
D. 17/20
If two dice are thrown together, the probability of getting an even number on one die and an odd number on the other is ____?
A. 1/4
B. 1/2
C. 3/4
D. 3/5
If four coins are tossed, the probability of getting two heads and two tails is _____?
A. 3/8
B. 6/11
C. 2/5
D. 4/5
If a card is drawn from a well shuffled pack of cards, the probability of drawing a spade or a king is _____?
A. 19/52
B. 17/52
C. 5/13
D. 4/13
If six persons sit in a row, then the probability that three particular persons are always together is ______?
A. 1/20
B. 3/10
C. 1/5
D. 4/5
A bag contains 7 green and 8 white balls. If two balls are drawn simultaneously, the probability that both are of the same colour is -.
A. 8/15
B. 2/5
C. 3/5
D. 7/15
A basket has 5 apples and 4 oranges. Three fruits are picked at random. The probability that at least 2 apples are picked is _____?
A. 25/42
B. 9/20
C. 10/23
D. 41/42
Three 6 faced dice are thrown together. The probability that all the three show the same number on them is -.
A. 1/216
B. 1/36
C. 5/9
D. 5/12
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
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
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
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
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
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
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
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
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
What is the probability that a leap year has 53 Sundays and 52 Mondays?
A. 0
B. 1/7
C. 2/7
D. 5/7
