What is the probability that when a fair 6-sided die is rolled, a prime number faces up?
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
What is the probability that when a fair 6-sided die is rolled, a prime number faces up?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
\frac{1}{2}
What is the probability that when a fair 6-sided die is rolled, a prime number faces up?
train