Question

You roll two dice. What is the probability of rolling a 3 or a 5 on the second die, given that you rolled an odd number on the first die?

Answer 1

first die doesn't matter. rolling a 3 or 5 on one die roll is 2 chances out of 6, or 2/6 = 1/3.

Answer 2

The probability of rolling a specific number on a die is independent of what you roll on the first die, so calculate the probability by using success/total possible outcomes.