Who can jump higher than a Mountain?

The following alphametic has only one solution. Can you find it?
ENLIST + SILENT + LISTEN = ANAGRAM

PS: You may start the number from 0.

Different lights make me strange by changing me into different sizes. What am I?

What part of the chicken has the most feathers?

A father is locked up in jail. His wife has gone bankrupt. Their male child has to sell his hotel in order to gain some money. Yet their girl child does not care and is quite happy.

How can someone be so rude?

What is the fastest way to double your money?

They are the five precious gems of an everyday sort and all can be found on a Tennis Court. Who are they?

It's a 7-letter word.
If we remove 1 letter from it, it remains the same.
If we remove 2 letters from it, it remains the same.
If we remove 3 letters from it, it remains the same.
If we remove all the letters from it, still it remains the same.
What is it?

When we see 2 but call 10?

10+10 and 11+11 can give you the same answer.

Explain how?