On rainy days he has his umbrella to press it with, and anyone else in the lift can press it for him. The rain is the clue that kills every other answer.
A man lives on the tenth floor of a block of flats. Every morning he takes the lift down to the ground floor and goes to work. When he comes home, he takes the lift to the seventh floor and walks up the stairs the rest of the way, even though he hates walking. On rainy days, or when someone else is in the lift, he rides all the way up to the tenth. Why?
Give me a hintThe hint
Think about what he can and can’t do inside the lift.
Reveal the answerHide the answer
He’s too short to reach the button for the tenth floor
Source: Agnes Rogers, How Come?, 1953