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01.

A dice is rolled twice. In how many outcomes is the sum of the numbers shown on the two dice is a prime number?

A.	15	B.	4
C.	5	D.	14

Answer and Explanation

Answer: 4

Explanation:
The outcomes in which the sum of the numbers that turn the 3 occasions is 17 or 18 are shown below. 5,6,6 ; 6, 5, 6 ; 6, 6, 5 and 6, 6, 6

There are 4 such outcomes.

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02.

If a dice is rolled 3 times, then the total number of possible outcomes is

A.	6n	B.	63
C.	62	D.	6

Answer and Explanation

Answer: 63

Explanation:
When a dice is rolled n times, the total number of possible outcomes is 6n here n = 3 => 63

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