Three boxes, three labels, and they're all wrong. With a single gesture—removing a single fruit from a single box—it is possible to know the contents of all three. The question is: from what box?
The three mislabeled boxes
Riddle statement
You have three closed boxes with these labels: “Apples”, “Oranges” and “Mixed”.
You know that all three labels are wrong.
You can take a single fruit out of a single box, without looking inside. How do you find out the correct contents of the three boxes?