There are a number of books on a shelf. If one book is the 4th from the left and 6th from the right, how many books are on the shelf?

The more you take me, the more you leave me behind.
Who Am I?

I travel all around the world but always stay in the corner. What am I?

John and Jill are madly in love with each other. To remind Jill of his pure love, John wants to send her a ring by post but in their country where burglary is quite prominent, any package that is not locked comes under the risk of being stolen for the contents.

John and Jill possess many padlocks but neither one of them has the other key.

Can you find a way John can send the ring to Jill safely?

I have no life, but I can die. What am I?

I’m orange, I wear a green hat and I sound like a parrot. What am I?

Can you move 2 matchsticks to form four equal sized squares.

Count the number of triangles in the given picture.

Find the next number in the series below

21 32 54 87 131 ?

When it is alive we sing, when it is dead we clap our hands. What is it?