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

It has five wheels, though often think four, You cannot use it without that one more, You can put things in it, you can strap things on top, You can't find it in the market, but you can still go shop. What is it?

You may enter, but you may not come in. I have space, but no room. I have keys, but open no lock. What am I?

An artist while painting a scenic beauty, decides to paint three layers of blue colour on the sky.

Which layer will go on the first?

In the picture given below, can you find out which digit will take place of the question mark?

You find yourself in a strange place guarded by two guards.One of the guard always say truth while other always lies.You don't know the identity of the two.You can ask only one question to go out from there. What should you ask?

If we tell you that there is a relation between the numbers and letters in the given figure, can you analyze it and find the missing letter in the last box?

What do you call a fish without an eye?

I can be cracked, made, told, and played. What am I?

Decode the movie name from the below picture?