A man lives on the 10th floor. Every morning he takes the elevator down. Coming home, he rides to the 7th floor and walks up, unless it's raining. Why?
Hint: Think about his height.
He's short and can only reach the 7th-floor button, unless he has an umbrella to press the 10.
On rainy days he carries an umbrella and can use it to push the higher button. It's a classic lateral thinking puzzle that challenges assumptions.
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