A. 7/12

**B. 5/9**

C. 1/36

D. 5/12

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# Probability

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

A. 10/17

B. 10/19

C. 46/105

**D. Cannot be determined**

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## A 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

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## 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?

A. 3/22

B. 4/21

**C. 2/21**

D. 1/14

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## A coin is tossed live times. What is the probability that there is at the least one tail?

**A. 31/32**

B. 1/16

C. 1/2

D. 1/32

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## 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?

**A. 5/21**

B. 5/14

C. 9/14

D. 16/21

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

A. 1/10

B. 9/10

**C. 1/5**

D. 3/10

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

A. 0

**B. 1/7**

C. 2/7

D. 5/7

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## A 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

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## 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?

**A. 18/35**

B. 12/35

C. 17/35

D. 19/35

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