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

Explain how?

Can you find the key in the picture below?

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?

What is the word or phrase?

Which alphabet letter is a question?

Samuel was out for a walk when it started to rain. He did not have an umbrella and he wasn't wearing a hat. His clothes were soaked, yet not a single hair on his head got wet. How could this happen?

A man wants to cross the pit of fire which is 25 feet in length and he has 2 planks(fire resistant) 19 feet in length. How can he cross the pit of fire alive?

A number can be multiplied by multiple of nine
i.e 9 18 27 36 45 ...

and the resulting number consist of only one digit.

Can you identify the number ?

Can you think of any three-dimensional shape that comprises of exactly two surfaces?

I travel all around the world but always stay in the corner. What am I?