Multiple choice general knowledge math & puzzles what's the probability of getting a odd prime number while rolling a fair dice. 1/6 1/2 1/4 1/3 Reveal answer Fill a bubble to check yourself D Correct answer Explanation A fair die has numbers {1, 2, 3, 4, 5, 6}. The prime numbers are {2, 3, 5}. Among these, the odd prime numbers are {3, 5}. There are 2 favorable outcomes out of 6 total, so the probability is 2/6 = 1/3.