Question

What is the probability of rolling an even number on the first roll of a number cube and rolling an odd number on the second roll?

Answer 1

1/4.

Explanation:

There are 3 even numbers in the 6 numbers on a cube.

So Probability first roll is even = 3/6 = 1/2.

By the same reason Probability of odd number = 1/2.

So: Probability(First is even and second is odd) = 1/2 * 1/2 = 1/4.