You need to move three matchsticks to form three squares. Can you do it?

Can you find the mistake in the below statement?

10+10 and 11+11 can give you the same answer.

Explain how?

If you say my name, I will no longer exist. What am I?

It comprises roots which nobody sees,
Much taller than those trees,
Up and up it goes,
Still it never grows?

A seven-year-old kid challenged his classmates that he can make the number one disappear by adding something to it.

How can he do that?

In the given figure, move three matchsticks so that the resulting figure contains two rectangles.

Baseball bat and ball cost $100. If the bat cost $99 more than the ball, what is the cost of each?

Can you make the number 24 by utilizing the numbers 1, 3, 4 and 6? You must use one number only one time and you can use mathematical operation symbols anytime anywhere.

As easy as you can get into me, it is as hard to get out of me.

Do you know what I am?