What does this rebus means ?

PROG WORKRESS

After teaching his class all about Roman numerals (X = 10, IX=9 and so on) the teacher asked his class to draw a single continuous line and turn IX into 6. The teacher's only stipulation was that the pen could not be lifted from the paper until the line was complete.

What is red and smells like blue paint?

What Does this text mean:

important=important

Every words stands for unique digit that makes the arithmetic equation true

SEVEN + SEVEN + SIX = TWENTY.

What are the digits ?

Why did Buffon take the goal with him after every Juventus match?

The person who makes it has no need for it. He who purchases it does not use it. The person who does use it does not know they are. What is it?

No one wants to have it, but if one got it, he does not want to lose it. What is It?

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?

At a party, there are five people and a whole round cake lying at the centre of the table. Only four people will make a cut and take their piece and the last one will get the remaining piece on the table. How can they make sure that everyone gets a 1/5th of the piece?