If a wheel has 54 spokes, how many spaces are there between the spokes?

I travel all around the world but always stay in the corner. What am I?

I have teeth but i don't bite. Who Am I ?

81 x 9 = 801. What must you do to make the this equation true?

Find the missing letter in the last circle logically in the given below picture.

I can turn polar bears white.
I can make anyone dance.
I can make everyone cry
I can make your hands clap
I can make you thin.
I can make you smile.
I can make you smile

Can you guess the riddle?

Assume the given figure to be a delicious doughnut. Yes, now you can concentrate more on the puzzle. So you have this delicious doughnut in your refrigerator when your friends come knocking at the door. There are eight of them. Now you have to make three cuts in this doughnut so that each one of you nine people can enjoy a piece of it. Neither you nor your friends would mind the size of their piece as long as they are getting it. How will you do it?

Below, you will find the mathematical proof that 10 equals 9.99999?. But is that possible or there is something wrong about it? Can you find the error?

x = 9.999999...
10x = 99.999999...
10x - x = 90
9x = 90
x = 10

There is a square of a particular number which when doubled, becomes 7 more than its quarter.

Can you find the number?

I am a white box having no key or lid.
Yet there is a golden treasure inside it.

What Am I?