Probability Aptitude Questions and Answers

This section focuses on "Probability" in Quantitative Aptitude. These Multiple Choice Questions (mcq) should be practiced to improve the Quantitative Aptitude skills required for various interviews (campus interviews, walk-in interviews, company interviews), placements, entrance exams and other competitive examinations.

1. When a single die is rolled, the sample space is {1,2,3,4,5,6}.What is the probability of getting a 3 when a die is rolled?

A. (1/2)
B. (1/6)
C. (1/4)
D. (1/3)

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2. Tickets numbered 1 to 37 are mixed up and then a ticket is drawn at random. What is the probability that the ticket drawn has a number which is a multiple of 4 or 10?

A. (11/37)
B. (12/37)
C. (13/37)
D. (14/37)

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3. A Receptacle contains 3violet, 4purple and 5 black balls. Three balls are drawn at random from the receptacle. The probability that all of them are purple, is:

A. (3/55)
B. (4/55)
C. (1/55)
D. (9/55)

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4. one rupee coin is tossed twice. What is the probability of getting two consecutive heads ?

A. (1/2)
B. (1/3)
C. (1/4)
D. (4/3)

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5. A box contains 5 cone and 4 chocobar ice-creams. Preethi eats 3 of them, by randomly choosing. What is the probability of choosing 1 chocobar and 2 cone ice-creams?

A. (10/63)
B. (20/63)
C. (30/63)
D. (40/63)

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6. What is the probability of drawing a jack and a queen consecutively from a deck of 52 cards, without replacement?

A. (1/663)
B. (2/663)
C. (3/663)
D. (4/663)

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7. In MSM college, 35% of the students study Tamil and English. 40% of the students study English. What is the probability of a student studying Tamil given he/she is already studying english?

A. 0.75
B. 0.815
C. 0.825
D. 0.875

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8. A cartoon contains 15 torch lights out of which 3 are defective. Two torch light are chosen at random from this cartoon. The probability that at least one of these is defective is.

A. (11/35)
B. (12/35)
C. (13/35)
D. (14/35)

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9. Three unbiased coins are tossed. What is the probability of getting at most two heads?

A. (5/8)
B. (6/8)
C. (3/8)
D. (7/8)

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10. In a lottery, there are 10 prizes and 25 blanks. A lottery is drawn at random. What is the probability of getting a prize?

A. (2/7)
B. (3/7)
C. (4/7)
D. (5/7)

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