A man dies of old age on his 25 birthday. How is this possible?

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?

What will you call your mother's brother's brother-in-law?

You can see it everyday, But cannot touch it at will. What is it?

It is deaf, Dumb and Blind!!!

Still, always tells the truth. What is it?

If 5 cats catch 5 mice in 5 minutes, how long will it take one cat to catch a mouse?

You are given 2 eggs.
You have access to a 100-storey building.
Eggs can be very hard or very fragile means it may break if dropped from the first floor or may not even break if dropped from 100th floor, Both eggs are identical.
You need to figure out the highest floor of a 100-storey building an egg can be dropped without breaking.
Now the question is how many drops you need to make. You are allowed to break 2 eggs in the process

Outside a tattoo artist's shop, there was a signboard which read 'I make tattoos on only them who do not tattoo themselves'.

Reading it what do you think, does the tattoo artist tattoo himself?

What happened when the wheel was invented?

Can you find out a way through which you can make five squares out of the given figure by moving just six match sticks?