There are three boxes: one contains only apples, one contains only oranges, and one contains both apples and oranges. Each box is labeled incorrectly. You can pick one fruit from one box. Which box should you choose to correctly label all the boxes?
Answer: A. Box with both fruits
Choosing from the box labeled 'both' (which is incorrect) will give you either an apple or an orange, allowing you to correctly identify the contents of all boxes.