Question

A standard fair dice is rolled twice what is the probability of getting an even number on the first roll and any number except one on the other

Answer 1

Explanation:

When you roll two dice, the probability the first die is even is 1/2, the probability the second die is 1/2, and the probability both are even is (1/2) (1/2)= 1/4 (the results of the two rolls are independent) so the probability that either one or both are even is 1/2+ 1/2- 1/4= 3/4.