Count the number of lines in the image below ?

I know a country, If you remove the last alphabet of its name, it will become a part of your body. Do you name it?

I was born in a small house and I live in it all alone. No windows and no doors have been assigned to my house. The only way I can go out is by breaking through the walls of my house.

Who am I?

There are three boxes. One is labeled "APPLES" another is labeled "ORANGES". The last one is labeled "APPLES AND ORANGES". You know that each is labeled incorrectly. You may ask me to pick one fruit from one box which you choose.

How can you label the boxes correctly?

Below, you will find the mathematical proof that 10 equals 9.99999?. But is that possible or there is something wrong about it? Can you find the error?

x = 9.999999...
10x = 99.999999...
10x - x = 90
9x = 90
x = 10

No matter how little or how much you use me, you change me every month. What am I?

What three numbers, none of which is zero, give the same result whether they’re added or multiplied?

Always in you, Sometimes on you;

If I surround you, I can kill you.

What am I?

What has six faces, but does not wear makeup, has twenty-one eyes, but cannot see? What is it?

In the addition below, all digits have been replaced by letters. Equal letters represent equal digits and different letters represent different digits.
ABCABA
BBDCAA
ABEABB
ABDBAA
------- +
AAFGBDH
What does the complete addition look like in digits?