When can we add 2 to 11 and get 1 as the correct answer?

If you had a pizza with crust thickness 'a' and radius 'z', what's the volume of the pizza?

What two things can you never eat for breakfast?

You have two strings whose only known property is that when you light one end of either string it takes exactly one hour to burn. The rate at which the strings will burn is completely random and each string is different. How do you measure 45 minutes?

Look at the picture and find out which square is not linked with any of the other squares.

Why do we preferably have round manhole covers and not square ones?

John went to meet his friend Jacob, but when he was about to reach the main gate, John notices that Jacob had a mighty dog who was fastened to the tree. The chain is long enough that it allows the dog to reach the main gate.

How can the John reach the main gate?

A man and a dog were going down the street. The man rode, yet walked. What was the dog’s name?

Can you identify the Oscar-winning movie from the rebus below?

Eight Chelsea player makes the following statements :

1. Seven of us are lying here.
2. Six of us are lying here.
3. Five of us are lying here.
4. Five of us are lying here.
5. Four of us are lying here.
6. Three of us are lying here.
7. My name is Torres.
8. My name is Lampard.

The last two are Lampard and Torres or maybe Torres and Lampard.
So can you deduce which of the last two is Lampard or Torres?