When we see 2 but call 10?

When is the top of a mountain similar to a savings account?

Why did the Girl throw the butter out of the window?

You bought me for dinner but never eat me. What am I?

How is a fly different from a mosquito?

The horse jumps over the king.
Strangely there is absolutely no scratch on him.

Can anyone explain, how is this possible?

What building has the most stories?

It has horns but can’t beep. It is like to bleat but It is not a sheep. What is it?

A sea diver is a real show-off. He showed everyone that he can hold his breath underwater for 15 minutes.

I went to the diver and told him that I can be underwater for double the time i.e 30 minutes.
He responded that he will give me 100$ if I would be able to do it. I won 100$.

What did I do?

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

Who am I?