Solve the mathematical equation in the picture below.

Twice ten are six of us,

Six are but three of us,

Nine are but four of us;

What can we possibly be?

Would you know more of us?

Twelve are but six of us,

Five are but four, do you see?

What are we?

What will you call your mother's brother's brother-in-law?

You see a mathematical expression in the picture. Can you think of a movie that this expression refers to?

I am an odd number. Take away a letter and I become even. What number am I?

What is the next number in this matchsticks series riddle?

While handling a project, the landscaper is asked by the owner of the mansion that he wants four trees in front of his mansion that are exactly equidistant from each other.

How will he do it?

The square root of number 121 is "11". What is the square root of the number "12345678987654321."?

I was speeding and ran through a stop sign, yet two traffic officers who were there do nothing about it.

why?

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?