Question: Out 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?

• 1. 1/6
• 2. 5/8
• 3. 3/8
• 4. 5/6

Question: The probability that A speaks truth is 3/5 and that of B speaking truth is 4/7. What is the probability that they agree in stating the same fact?

• 1. 18/35
• 2. 12/35
• 3. 17/35
• 4. 19/35

Question: In a party there are 5 couples. Out of them 5 people are chosen at random. Find the probability that there are at the least two couples?

• 1. 5/21
• 2. 5/14
• 3. 9/14
• 4. 16/21

Question: The probability of a lottery ticket being a prized ticket is 0.2. When 4 tickets are purchased, the probability of winning a prize on at least one ticket is__________?

• 1. 0.4869
• 2. 0.5904
• 3. 0.6234
• 4. 0.5834

Question: 10 books are placed at random in a shelf. The probability that a pair of books will always be together is_________?

• 1. 1/10
• 2. 9/10
• 3. 1/5
• 4. 3/10

Question: What is the probability that a leap year has 53 Sundays and 52 Mondays?

• 1. 0
• 2. 1/7
• 3. 2/7
• 4. 5/7

Question: Out of 15 consecutive numbers, 2 are chosen at random. The probability that they are both odds or both primes is_________?

• 1. 10/17
• 2. 10/19
• 3. 46/105
• 4. Cannot be determined

Question: 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?

• 1. 4/9
• 2. 5/9
• 3. 7/9
• 4. 8/9

Question: 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?

• 1. 3/22
• 2. 4/21
• 3. 2/21
• 4. 1/14

Question: 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?

• 1. 1/455
• 2. 2/455
• 3. 1/91
• 4. 4/455