Why is 6 afraid of 7?

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

When I get multiplied by any number, the sum of the figures in the product is always me. What am I?

I taste better than I can smell. Who am I?

An ape is trying to climb on a pole that is 60 feet high. Due to the slippery surface, the ape climbs 3 feet in a minute only to slip back 2 feet.

How much time do you think the monkey will take to reach the top of the pole?

You Throw The Outside, Cook The Inside
Eat The Outside, Throw The Inside.

What Is It?

A man walked into a pub and went straight towards the Barman. He asked for a dirty martini from the Barman. The Barman thought something and then pulled out a pistol from his drawer and aimed it directly at the man. Why did he do that?

P is the father of Q and S is the son of R. T is the brother of P and has a daughter U. If R is the sister of P, then what is the relation between U, Q and S?

I cry without having a voice.
I fly without having wings.
I bite without having teeth.
I whisper without a mouth.

Who am I?

Replace the question mark with the correct number.