A fair die is rolled. What is the probability of rolling an even number?

A fair die is rolled. What is the probability of rolling an even number?

• A. 1/3
• B. 1/2
• C. 2/3
• D. 1

Answer: (B)

Think about chances on a fair six-sided die where every face is equally likely. The event “rolling an even number” has three favorable outcomes: 2, 4, and 6. There are six possible outcomes in total. So the probability is 3 out of 6, which simplifies to 1/2 (0.5).

Think about chances on a fair six-sided die where every face is equally likely. The event “rolling an even number” has three favorable outcomes: 2, 4, and 6. There are six possible outcomes in total. So the probability is 3 out of 6, which simplifies to 1/2 (0.5).