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?

I have branches, but no fruit, trunk or leaves. What am I?

Buy me, smell me or deliver me, I do not change.

Who am I?

What is the centre of gravity?

There is an English word that can be used up to four times in a row without modifying the spelling and form a valid grammatical sentence.

Do you know what word is that?

Outside a massage parlour, there is a board that reads
"I only massage those who do not massage themselves."

Reading the above statement, does the masseur massage himself?

It's a protector.
It sits on a bridge.
One individual can see directly through it, while others wonder what it hides.

What is it?

Prove that the below maths equation is true.

8 + 8 = 91

What is the end of everything?

I cannot talk, but I always reply when spoken to. What am I?