What does this rebus means ?

PROG WORKRESS

How can you make number one disappear by adding something to it?

Mr Red Lives in the red house.
Mr Green Lives in the greenhouse.
Mr Yellow Lives in the yellow house.

Who lives in the Whitehouse?

What happened when the wheel was invented?

Can you solve this amazing hard number series problem?
7, 8, 10, 12, 16, 18 ?

There are people and strange monkeys on this island, and you can not tell who is who (Edit: until you understand what they said - see below). They speak either only the truth or only lies.
Who are the following two guys?
A: B is a lying monkey. I am human.
B: A is telling the truth.

A man was just doing his job when his suit was torn. Why did he die three minutes later?

Is the statement valid that it does not matter how much older a sibling is, eventually the younger one will be half as old as the older one?

A man dies of old age on his 25 birthday. How is this possible?

What has hands, but can’t clap?