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In the addition below, all digits have been replaced by letters.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?

What question can you never answer yes to?

Can it be possible to build a house that has all its four walls facing towards the South?

Assume the given figure to be a delicious doughnut. Yes, now you can concentrate more on the puzzle. So you have this delicious doughnut in your refrigerator when your friends come knocking at the door. There are eight of them. Now you have to make three cuts in this doughnut so that each one of you nine people can enjoy a piece of it. Neither you nor your friends would mind the size of their piece as long as they are getting it. How will you do it?

What do you see in the image below

The more of this there is, the less you see. What is it?

If an electric train is travelling south, then which way is the smoke going?

A man in a car saw a Golden Door, Silver Door and a Bronze Door. What door did he open first?

If,

6 / 7 = 2
3 / 9 = 7
8 / 2 = 6

Then

4 / 5 = ?