How can a man go eight days without sleep?

If EELS + MARK + BEST + WARY = EASY

What does HELP + BARK + WARD + LEAD equal?

There are three boxes on a table. One of the box contains Gold and the other two are empty. A printed message contains in each box. One of the message is true and the other two are lies.

The first box says "The Gold is not here".

The Second box says "The Gold is not here".

The Third box says "The Gold is in the Second box".

Which box has the Gold?

There was an aeroplane crash, every single person died, but two people survived. How is this possible?

What 4-letter word can be written forward, backward or upside down, and can still be read from left to right?

John needs to purchase 100 chocolates from three different shops and he has exactly 100 rupees to do that which he must spend entirely. He must buy at least 1 Chocolate from each shop.

The first shop is selling each chocolate at 5 paise, the second is selling at 1 rupee and the third is selling at 5 rupees.

How many chocolates should he buy from each shop?

One is to three as three is to five and five is to four and four is the magic number.
What is the pattern?

In the below-given picture of a pretty girl, there is something wrong. Can you find out what it is?

Two in a corner, one in a room, zero in a house, but one in a shelter. What is it?

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