John killed hundreds of people mercilessly and yet the police were not able to put her behind the bars. Why?

You can see it everyday, But cannot touch it at will. What is it?

There was a man he lives in a hotel each morning he presses the first floor button each evening if there is a person in the elevator he asks him to press the 10 floor button if there is no one in the elevator he takes the stairs why.

A dying old man wants to divide his entire land between his only two sons. Since his only wish is to treat them as equal as both of them have been too good to him, he wants to divide his land equally between them. The problem is that the land is significantly irregular in shape and thus there is no choice of cutting them into two equal halves.

Can you help him divide the land in a manner that both of his sons will be happy?

What is black when you buy it, red when you use it, and gray when you throw it away?

Can you find the hidden animal in the picture below?

There is a square piece of paper with a hole that is denoted by the circle on the top right side in the given picture. You have to cut the paper in a manner that it forms two and only two separate pieces of paper and then rearrange the pieces in a manner that the holes come in the centre of the paper.

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?

I am the beginning of the end, and the end of time and space. I am essential to creation, and I surround every place. What am I?

No one wants to have it, but if one got it, he does not want to lose it. What is It?