What's the only room from which no one can enter or leave

Remove two matchsticks to make the below equation correct.

You stand in front of two doors. A guard stands next to each door. You know the following things: one path leads to paradise, the other leads to death. You cannot distinguish between the two doors. You also know that one of the two guards always tells the truth and the other always lies. You have permission to ask one guard one question to discover which door leads to paradise. What one question would you ask to guarantee you enter the door to paradise?

A seven-year-old kid challenged his classmates that he can make the number one disappear by adding something to it.

How can he do that?

What begins with T, ends with T, and has T in it?

Why did Buffon take the goal with him after every Juventus match?

An infinite number of mathematicians are standing behind a bar. The first asks the barman for half a pint of beer, the second for a quarter pint, the third an eighth, and so on. How many pints of beer will the barman need to fulfill all mathematicians' wishes?

You have two jars of chocolates labelled as P and Q. If you move one chocolate from P to Q, the number of chocolates on B will become twice the number of chocolates in A. If you move one chocolate from Q to P, the number of chocolates in both the jars will become equal.

Can you find out how many chocolates are there in P and Q respectively?

How can you make number one disappear by adding something to it?

What famous saying does this rebus mean?

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