Question

A die is rolled twice What is the probability that the sum of the numbers on the two faces is 5?

Options

• `3/13`

• `4/13`

• `6/13`

• `1/9`

Answer 1

`1/9`

Explanation:

When a dice is rolled twice

Total sample space = 36

Sample space that sum of the number appear is 5 = (1, 4) (2, 3) (4, 1) (3, 2)

i.e. n(E) = 4 ∴ P(E) = `4/36 = 1/9`