If you have 10 coins and all of them are nickels except for 2, how many are not nickels?

In this scenario, you have a total of 10 coins, and the problem specifies that all of them are nickels except for 2. This means that out of the 10 coins, 2 of them are not nickels. Therefore, the correct answer is that there are 2 coins that are not nickels.

To visualize this: if you have 10 coins in total and all but 2 are nickels, it directly indicates that those 2 coins must be of a different type. The phrasing of the question guides us to focus on the specifics regarding the other types of coins included in the total. Thus, identifying that 2 coins are not nickels aligns perfectly with the provided information.