There was a man he lives in a hotel each morning he presses the first floor button each evening if there is a person in the elevator he asks him to press the 10 floor button if there is no one in the elevator he takes the stairs why.

What four weights can be used to balance from 1 to 30 pounds?

Why is it very easy to weigh a fish?

In a guessing game, five friends had to guess the exact numbers of apples in a covered basket.
Friends guessed 22, 24, 29, 33, and 38, but none of the guesses was correct. The guesses were off by 1, 8, 6, 3, and 8 (in random order).

Can you determine the number of apples in a basket from this information?

John enters a small room. The Door Closes.
When the door opens, John is in a larger room.

Explain?

A mile-long train is moving at sixty miles an hour when it reaches a mile-long tunnel. How long does it take the entire train to pass through the tunnel?

There is one thing that goes round the house and also inside the house but never even share a brief touch. What is it?

The first person saw the bridge step on it and crossed,
the second person saw the bridge did not step on it but crossed,
the third person did not see the bridge did not step on it but crossed.
Who are these people?

What time is it when an elephant sits on a fence?

A certain street contains 100 buildings. They are numbered from 1 to 100. How many 9's are used in these numbers?