Question

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

Options

• `1/13`

• `4/13`

• `6/13`

• `1/9`

Answer 1

`1/9`

Explanation:

When a dice is rolled twice total number of sample space = 36

Sample space for the Sum of the numbers on 2 Faces is 5 = (1, 4) (2, 3) (3, 2)(4, 1)

i.e. n(E) = 4

P(E) = `4/36 = 1/9`