Replace the question mark with the correct number in below Picture:

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

Explain how?

How can you make a TV, a bed, a dog, and a car liquid?

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

What is the largest amount of money that you can possess in change and still if someone asks you for a dollar, you won't be able to give?

How will you measure 15 minutes using two hourglasses of 7 minutes and 11 minutes respectively?

There is an exact a week gap between Christmas and New Year. Hence, It is obvious that the new year that comes right after Christmas comes on the same day of the week.

A Strange thing happened in the Year 1777. Christmas occurs on Wednesday and New Year on Monday. How is that possible?

The more you take me, the more you leave me behind.
Who Am I?

Which country gets ill every time?

How can you take 2 from 5 and leave 4?