What does this rebus means ?

PROG WORKRESS

What is the centre of gravity?

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

How many times can you subtract the number 5 from 25?

What is the difference between a jeweller and a jailer?

Do you know who was buried in John's tomb?

If nine thousand, nine hundred nine dollars is written as $9,909,
how should twelve thousand, twelve hundred twelve dollars be written?

Which point will the car reach to go out?

Make eight squares by moving only two matchsticks.
Note- Square can be of different sizes.

You have a basket containing ten apples. You have ten friends, who each desire an apple. You give each of your friends one apple.
Now all your friends have one apple each, yet there is an apple remaining in the basket.
How?