Probability – Aptitude MCQ Questions – 15 Posted on July 11, 2020July 11, 2020 by admin Question 1Bag contain 10 black and 20 white balls, One ball is drawn at random. What is the probability that ball is white A. 1/3 B. 2/3 C. 1/2 D. 4/3 Question 2Two dice are thrown simultaneously. What is the probability of getting the sum of the face number is odd? A. 1/2 B. 2/3 C. 3/4 D. 1/3 Question 3Find the probability that getting 4 digit number with 1 in the unit place and 2 in the tens place when the numbers 1, 2, 3, 4 and 5 are arranged at random without repeating. A. 1/5 B. 1/10 C. 1/15 D. 1/20 Question 4In a school, 45% of the students play football, 30% play volleyball and 15% both. If a student is selected at random, then the probability that he plays football or volleyball is: A. 1/4 B. 2/7 C. 3/5 D. 4/5 Question 5Two unbiased coins are tossed. What is probability of getting at most one tail ? A. 12 B. 23 C. 3/2 D. 3/4 Question 6In a throw of coin what is the probability of getting head. A. 0 B. 1 C. 2 D. 12 Question 7A box contains 3 white, 4 red and 7 blue erasers. If five erasers are taken at random then the probability that all the five are blue color is: A. 2/126 B. 3286 C. 12/121 D. 13/211 Question 8In a box, there are 8 red, 7 blue and 6 green balls. One ball is picked up randomly. What is the probability that it is neither blue nor green? A. 2/3 B. 3/7 C. 8/21 D. 9/22 Question 9On rolling a dice 2 times, the sum of 2 numbers that appear on the uppermost face is 8. What is the probability that the first throw of dice yields 4? A. 2/36 B. 1/36 C. 1/6 D. 1/5 Question 10Two dice are thrown simultaneously. What is the probability of getting the face numbers are same? A. 1/6 B. 2/3 C. 4/9 D. 5/6