Probability – Aptitude MCQ Questions – 14 Posted on July 11, 2020July 11, 2020 by admin Question 1A box has 5 black and 3 green shirts. One shirt is picked randomly and put in another box. The second box has 3 black and 5 green shirts. Now a shirt is picked from second box. What is the probability of it being a black shirt? A. 4/9 B. 29/72 C. 8/72 D. 3/16 Question 2In a set of 30 game cards, 17 are white and rest are green. 4 white and 5 green are marked IMPORTANT. If a card is chosen randomly from this set, what is the possibility of choosing a green card or an ‘IMPORTANT’ card? A. 13/30 B. 22/30 C. 17/30 D. 9/13 Question 3In a drawer there are 4 white socks, 3 blue socks and 5 grey socks. Two socks are picked randomly. What is the possibility that both the socks are of same color? A. 4/11 B. 1 C. 2/33 D. 19/66 Question 4A box has 6 black, 4 red, 2 white and 3 blue shirts. When 2 shirts are picked randomly, what is the probability that either both are white or both are blue? A. 4/105 B. 1/35 C. 1/105 D. 1/15 Question 5A pot has 2 white, 6 black, 4 grey and 8 green balls. If one ball is picked randomly from the pot, what is the probability of it being black or green? A. 3/4 B. 7/10 C. 4/3 D. 1/10 Question 6A box has 6 black, 4 red, 2 white and 3 blue shirts. What is the probability that 2 red shirts and 1 blue shirt get chosen during a random selection of 3 shirts from the box? A. 18/455 B. 7/15 C. 74/35 D. 72/730 Question 7A box has 6 black, 4 red, 2 white and 3 blue shirts. What is probability of picking at least 1 red shirt in 4 shirts that are randomly picked? A. 4/15 B. 24/455 C. 69/91 D. 22/91 Question 8When two coins are tossed simultaneously, what are the chances of getting at least one tail? A. 4/5 B. 1/5 C. 3/4 D. 1/4 Question 9In a drawer there are 5 black socks and 3 green socks. Two socks are picked randomly one after the other without replacement. What is the possibility that both the socks are black? A. 5/14 B. 5/8 C. 3/8 D. 5/16 Question 10Suresh keeps all his socks in a single drawer. He has 24 pairs of white socks and 18 pairs of grey socks. Suresh picks 3 socks randomly. Find the possibility of Suresh choosing a matching pair. A. 1/36 B. 1/108 C. 7/36 D. 1