Probability – Aptitude MCQ Questions – 12 Posted on July 11, 2020July 11, 2020 by admin Question 1A 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 Question 2Out 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 Question 3A 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 Question 4A 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 Question 5A box contains nine bulbs out of which 4 are defective. If four bulbs are chosen at random, find the probability that exactly three bulbs are good. A. 20/31 B. 20/63 C. 5/31 D. 6/31 Question 6Out 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. 1/6 B. 5/8 C. 3/8 D. 5/6 Question 7A 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 Question 8If 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 Question 9The 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 Question 10Two dice are thrown simultaneously. What is the probability of getting the sum of the face number is at least 10? A. 1/3 B. 1/6 C. 2/3 D. 5/6