Peter wakes up daily to pick up his cycle and crosses the border between Spain and France daily with a bag on his shoulder. He is investigated daily by the officials but they don't find anything suspicious.

If we tell you that he is smuggling something what would it be?

What does the following represent?

N N N N N N N

A A A A A A A

C C C C C C C

Your last good ping-pong ball fell into a narrow metal pipe embedded one foot deep in concrete.
How can you get it out undamaged, if all the tools you have are your tennis paddle, shoe laces, and plastic water bottle, which does not fit into the pipe?

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

Look at the below sequence of letters and tell us what the next letter should be:

O T T F F S S ?

I am lying and I always lie. Tell me whether I am lying or telling the truth.

If a shopkeeper can only place the weights on one side of the common balance. For example, if he has weights 1 and 3 then he can measure 1, 3 and 4 only. Now the question is how many minimum weights and names of the weights you will need to measure all weights from 1 to 1000? This is a fairly simple problem and very easy to prove also.

What time is it when an elephant sits on a fence?

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

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