What does this rebus means ?

PROG WORKRESS

Find the next number in the series

12, 20, 40, 72, 116, 172 ?

Two old friends, Jack and Bill, meet after a long time.

Three kids
Jack: Hey, how are you, man?
Bill: Not bad, got married and I have three kids now.
Jack: That's awesome. How old are they?
Bill: The product of their ages is 72 and the sum of their ages is the same as your birth date.
Jack: Cool..But I still don't know.
Bill: My eldest kid just started taking piano lessons.
Jack: Oh, now I get it.

How old are Bill's kids?

There is one thing that goes round the house and also inside the house but never even share a brief touch. What is it?

What is the word or phrase below?
R | E | A | D

Replace the question mark with the correct number, given the pair of numbers exhibits a similar relationship?

? : 3839 :: 11 : 1209

How many times can you subtract the number two from the number fifty?

Replace all '*' with digits 1, 2, 3, 4, 5 and 6 to make below statement true.

* *
x *
=====
* * *

What has a ring but no finger?

Can you name four days which start with the letter 'T'?