What runs around the whole yard without moving?

Find the next number in the sequence

1, 2, 6, 21, 88, __?

What does below pictogram mean?

If we tell you that there is a relation between the numbers and letters in the given figure, can you analyze it and find the missing letter in the last box?

A man in a car saw a Golden Door, Silver Door and a Bronze Door. What door did he open first?

The first box has two white balls. The second box has two black balls. The third box has a white and a black ball.

Boxes are labeled but all labels are wrong!

You are allowed to open one box, pick one ball at random, see its colour and put it back into the box, without seeing the colour of the other ball.

How many such operations are necessary to correctly label the boxes?

What does this mean?

CCCCCCC

If you read clockwise, you can form a word by inserting three missing letters in the picture given below. Can you do it?

Can you think of any three-dimensional shape that comprises of exactly two surfaces?

What is the end of everything?