What has no start, end, or centre?

Can you find out the missing number in the grid?

Which Travels Faster? Solve below famous picture riddle:

A mules travels the same distance daily.
I noticed that two of his legs travels 10km and the remaining two travels 12km.
Obviously two mules legs cannot be a 2km ahead of the other 2.

The mules is perfectly normal. So how come this be true ?

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

What is the next number in this series?

4,12,84,3612....

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.

Solve this riddle by finding the odd one out from the rest.

Whats the next number in the below number sequence pattern.

what does this below rebus represent identXQQQQQME