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.

Where do fish keep their money?

Using exactly three matchsticks, can you divide the area into two equal parts?

I have an eye but still cannot see.

Who am I?

Why is 6 afraid of 7?

How many times can you subtract the number 5 from 25?

How many times can you subtract the number two from the number fifty?

How can one talk without saying a single word?

A man is approaching a broad and barren land. He has a package with him. If somehow, he is unable to open the package before reaching the land, he will die.

Can you guess what is present in the package?

Andrew sees a very rare bird named "Ruppell's vulture". Soon Andrew was dead. Can you explain the mystery, Mr. Sherlock?