Question

Jack rolls two standard number cubes.find the probability that the sum of the roll is 5, given that one cube up even and the other came up odd

Answer 1

`(4)/(36)` or
`(1)/(9)`

Explanation:

We are given that Jack rolls two standard number cubes and we are to find the probability that the sum of the roll is 5, given that one cube up even and the other came up odd.

A sum of two from two rolls would always be one even and one odd, whatsoever is the case.

To have a sum of five, we can have (1, 4), (2,3), (3,2) or (4,1) out of a sample space of 36 so the probability will be
`(4)/(36)` or
`(1)/(9)`.