How can a man go eight days without sleep?

You are a cab driver who pools passengers. You pick 3 people from a destination and drop 1 after an hour. 2 people climb aboard at the same time and you drop 3 at the next destination. After some time, you pick 2 passengers only to drop 1 after a short distance where 3 more passengers climb up the cab. You leave the rest of the passengers one by one to their destination and then come back home.

Can you tell the eye color of the cab driver?

What can go through glass without breaking it?

I know a ten-letter word in the English language which can be typed using only the top rows of the computer keyboard.

A man was just doing his job when his suit was torn. Why did he die three minutes later?

Cristina was born in 1888. She just had her 30th birthday today how did that happen?

Find the number of squares in the below-given picture.

It's a test that will check your IQ.

Suppose you have one 11 minute hourglass and one 13 minute hourglass.

Can you measure exactly fifteen minutes using them ?

Can you think of a smallest +ve number such that if we shuffle the digits of the number, the new number becomes double the original number?

An equation has been laid down using a few matchsticks. However, as you can see, the equation is not correct. Can you correct the equation if you are allowed to add or remove 5 matchsticks?