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.

In four steps you need to move the word 'cold' From 'warm' by replacing one alphabet at a time such that every word formed at each step is acceptable in English Dictionary.

I make a loud sound when I’m changing. When I do change, I get bigger but weigh less. What am I?

Look at the below sequence of letters and tell us what the next letter should be:

O T T F F S S ?

You are playing as white and given four rooks to checkmate the black king in four moves with the following rules 1. You can place one rook every move and ensure the black king should be in check position.2. After four moves the black king should be in the checkmate position.

Can you find the next number in the below sequence
3 , 7 , 10 , 11 , 12 , 17 ?

What brings you down but never up?

I hide my treasure in the ground, my tail is big and fluffy. If you spot me in a tree, please don’t call me scruffy. What am I?

I’m tall when I’m young, and I’m short when I’m old. What am I?

A man who was outside in the rain without an umbrella or hat didn’t get a single hair on his head wet. Why?