What building has the most stories?

What is the end of everything?

How is a fly different from a mosquito?

The barber of Town shaves all men living in the town. No man living in the town is allowed to shave himself. The barber lives in that town. Who then shaves the barber of the town?

Find the smallest sentence with all the English alphabet.

What is the last thing you take off before bed?

I am a type of word that is spelt incorrectly or used differently, on purpose for humour. What am I?
Hint 1: You can find me in a joke.
Hint 2: I am a play on words.

They are the five precious gems of an everyday sort and all can be found on a Tennis Court. Who are they?

What is the fastest way to double your money?

Prove that twice of ten is the same as twice of eleven.