You have two buckets of 11 liters and 6 litres.
How can you measure exactly 8 litres?

The two towns are exactly 100 km apart. John leaves City A driving at 30 km/hr and Jacob leaves City B half an hour later driving at 60 km/hr. Who will be closer to City A when they meet?

See the given image carefully. What you have to do is move the blue checkers in the position of the black checkers and vice versa. You are only allowed to move the checker to an adjacent empty space. Do it in the least possible moves.

You Throw The Outside, Cook The Inside
Eat The Outside, Throw The Inside.

What Is It?

There are forty elephants and they have forty-fore heads. How can this be possible?

10 people came into a hotel with 9 rooms and each guest wanted his own room. The bellboy solved this problem.
He asked the tenth guest to wait for a little with the first guest in room number 1. So in the first room, there were two people. The bellboy took the third guest to room number 2, the fourth to number 3, ..., and the ninth guest to room number 8. Then he returned to room number 1 and took the tenth guest to room number 9, still vacant.
How can everybody have his own room?

Twice ten are six of us,

Six are but three of us,

Nine are but four of us;

What can we possibly be?

Would you know more of us?

Twelve are but six of us,

Five are but four, do you see?

What are we?

Can you replace the question mark with the correct number in the below table sequence?

When I got four, I have it none.
When I got two, I have it some.
When I got none, I have it all.

What is it?

A man who was outside in the rain without an umbrella or hat didn’t get a single hair on his head wet. Why?