Tony Kennedy was asked the question "Theoretically, what is the minimum number of strokes with which a tennis player can win a set?" with the possible answers being 12, 24, 36, and 48. Tony answered "24" and was told he was correct. The answer is actually 12 because when it is the opponent's turn to serve the winning player would never have to make a stroke if the opponent kept double faulting. Despite the mistake Tony was still allowed to keep his prize money.