If 21x = 79x, what is the value of x?

Only one color, but not one size,
Stuck at the bottom, yet easily flies.
Present in sun, but not in rain,
Doing no harm, and feeling no pain.
What is it?

Prove that twice of ten is the same as twice of eleven.

A finger goes in me. You fiddle with me when you're bored. The best man always has me first. What am I?

A newspaper is supposed to have 60 pages, but pages 24 and 41 are missing.
Which other pages won't be there?

Take away my first letter, then take away my second letter. Then take away the rest of my letters, yet I remain the same. What am I?

What breaks yet never falls, and what falls yet never breaks?

They are the five precious gems of an everyday sort and all can be found on a Tennis Court. Who are they?

There's a day, that comes around once a year.
To celebrate the man, you hold dear.
He gave you life, love and will pick you up if you fall.
When it comes to guys like him, He's the best of all.
Who is he?

What is the largest amount of money that you can possess in change and still if someone asks you for a dollar, you won't be able to give?