Question

If i have 17 apples and i eat 17 apples how many pears do i have?

Answer 1

The number of pears is irrelevant for the information given. Therefore, there is not enough information to tell and the number of pears remain unknown.

Answer 2

If you eat all 17 apples, you will not have any apples left. However, the number of pears you have is not related to the number of apples you ate. So, the number of pears you have is unknown and not affected by the number of apples you ate.