How is the moon similar to a dollar?

When we see 2 but call 10?

I know a ten-letter word in the English language which can be typed using only the top rows of the computer keyboard.

Double it and multiply it by 4. Then divide it by 8 and you’ll have it once more. What number is it?

What does Alexander the Great and Winnie the Pooh have in common?

What always comes into a house through the keyhole?

In the four images below, can you find the odd one out?

Manish has to secure 40% marks to pass his B.tech final exams.
He got just 40 marks and failed by 40-marks.

What is the maximum marks?

A Man gave one of his sons 10 cents and another son was given 15 cents. What time is it?
Hint: Figure out the relation between time and number, is not so easy..:)

I am first found in caves, now prolific online; I am a depiction, a drawing, a symbol, or sign. I will convey whichever mood you could wish; or for that matter, a fist, flask, or fish. What am I?