A man in a car saw a Golden Door, Silver Door and a Bronze Door. What door did he open first?

I know a country, If you remove the last alphabet of its name, it will become a part of your body. Do you name it?

P is the father of Q and S is the son of R. T is the brother of P and has a daughter U. If R is the sister of P, then what is the relation between U, Q and S?

He does not have any heart but still, He manages to live.
If you kill him, you will eventually die but yet you kill him.
He cannot run, who is He?

John said, "If yesterday was tomorrow, today would be Friday."

When did John make this statement?

You are stuck on an island where you have nothing. You find four pieces of paper somewhere on the island. What will be your strategy to escape from the island safely?

PS: No other resource is available to you on the island, neither can you build anything.

What 4-letter word can be written forward, backward or upside down, and can still be read from left to right?

How can one talk without saying a single word?

A mathematics teacher took exams for his students. Out of the total students, 25% passed both the tests included in the exam. However, only 42% were able to clear the first test.

Can you find out the percentage of those students who passed the first test and also passed the second test?

Can you tell a 3D object that has just two surfaces?