Question

suppose you have two nickels in your pocket. you know that one is fair and one is two-headed. if you take one out, tossed it, and get a head, what is the probability that is spoiled?

Answer 1

Answer: 1/2 If I'm understanding the question right.

Explanation:

If one coin is heads on both sides and one is a regular coin, then there are two coins. 1 is 1/2 of 2 so there is a 1/2 chance that the coin you flipped is the heads on both sides coin.