Using Only Five 5's and any mathematical operator make sum as 37

How can a man go eight days without sleep?

I was born in a small house and I live in it all alone. No windows and no doors have been assigned to my house. The only way I can go out is by breaking through the walls of my house.

Who am I?

In this image, you can see three almost identical Doraemon images. Can you spot the odd one out from them?

The picture shows the dice results in each couple of throws. If they are actually following a pattern, can you find out the missing one?

In the figure, you can see nine stars. What you have to do is connect all of them by using just four line and without lifting your hand i.e. in a continuous flow.

A newspaper is supposed to have 60 pages, but pages 24 and 41 are missing.
Which other pages won't be there?

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?

You have 21 jars with you. Out of them, 7 are filled with water, 7 are half-full with water and 7 are empty. How will you distribute the jars among three people such that each one of them gets an equal number of jars and an equal amount of water?

What has 13 hearts but no other organs?