There are nine letters in the below-given diagram. You have to form a nine-letter word using these letters.

The person who makes it has no need for it. He who purchases it does not use it. The person who does use it does not know they are. What is it?

Take 9 from 6, 10 from 9, 50 from 40, and leave 6.

How Come ??

A charming young lady was approached by a kind looking old woman in a restaurant. The old woman said to her, 'You look exactly like my younger daughter. Sadly she passed away a couple of months back. Could you do me a favor and say 'Goodbye, mother' with a kind smile on your face when I leave?

The young lady agreed for the same and said, 'Goodbye, mother' when the old woman left. Soon after, she got the most disengaging shock of her life.

Can you guess what the shock was?

I’m light as a feather, yet the strongest person can’t hold me for five minutes. What am I?

Can you find the thief by just looking at the picture below?

Identify Me

Hint1: I am a god
Hint 2: I am a planet
Hint 3: measurer of heat

How can you tell a raw egg from a hard-boiled egg?

It's a 7-letter word.
If we remove 1 letter from it, it remains the same.
If we remove 2 letters from it, it remains the same.
If we remove 3 letters from it, it remains the same.
If we remove all the letters from it, still it remains the same.
What is it?

If,
29 - 1 = 30
9 - 1 = 10
14 - 1 = 15

Based on similar logic, Can you prove that the below algebraic equation is true?
11 - 1 = 10 ?