Solve below rebus puzzle?

How can you spell "White of an egg" in one word?
Hint: I know you can spell coke, poke, and joke.

You can see it everyday, But cannot touch it at will. What is it?

If,

A + B = C
D - C = A
E - B = C

Based on the above equations, find out the answer for:

D + F = ?

Rearrange the letters in "new door" to make one word.

During an experiment, a guy throws a bouncy ball from a 100 feet tall building. The ball has a specific characteristic. Every time it hits the ground, it bounces up halfway.

How many bounces do you think the ball will make before it comes to a stop ?

John can place six large boxes or nine small boxes into a carton.

Can you find out in how many cartons can he place sixty-six boxes in total?

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

What is the largest number you can write with just 3 digits?

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?