John has eleven friends. He has a bowl containing eleven apples. Now He wants to divide the eleven apples among his friends, in such a way that an apple should remain in his bowl.
How can He do it?

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

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?

There’s a one-story house in which everything is yellow. Yellow walls, yellow doors, yellow furniture. What colour are the stairs?

Below the four parts have been reorganised. The four partitions are exactly the same in both arrangements. Why is there a hole?

In the image given, you can find several triangles. Can you count them all?

How much will a 38° angle measure when looked at under a microscope that magnifies ten times?

Find the next number in the series.
1 10 24 43 67 ?

A mile-long train is moving at sixty miles an hour when it reaches a mile-long tunnel. How long does it take the entire train to pass through the tunnel?

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