I am a seven-letter word but if you remove four of my letters I will have one left. What word am I?

Why is the Hole below a Lock?

I am quite hot but become too cold if you remove the first two letters. What am I?

Can you find the ages of a son, father and grandfather based on the following facts?
The sum of the ages of grandfather, father and son is 140 years.
The age of the son in months is the same as the grandfather in years.
The age of the son in days is the same as the father in weeks.

You see a boat filled with people, yet there isn’t a single person on board. How is that possible?

Who can jump higher than a Mountain?

Three fair coins are tossed in the air and they land with heads up. Can you calculate the chances that when they are tossed again, two coins will again land with heads up?

A woman is sitting in her hotel room and hears a knock at the door. She opens the door to see a man whom she’s never met before. He says, “I’m sorry, I have made a mistake, I thought this was my room.” He then goes down the corridor and into the elevator. The woman goes back into her room and calls security. What made the woman so suspicious of the man?

Who is that with a neck and no head, two arms and no hands? What is it?

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