Replace the question mark with the number below given a simple math problem.

Can you quickly find which two matchstick figures are identical?

Why did the Girl throw the butter out of the window?

Living above a star, I do not burn
Eleven friends and they do not turn
I can just be visited in a sequence, not once or repeatedly
PQRS are my initials
Can you tell my name accurately?

Can you name an animal whose killing cannot be performed without spilling your own blood?

What can you deduce from the following BrainBat?

CRY
LMKI

I am the one who remains awake when you sleep. But I need to rest when you awake. Who Am I?

Can you count the number of children in the picture below

I look flat, but I am deep. Hidden realms I shelter. Lives I take, but the food I offer. At times I am beautiful. I can be calm, angry, and turbulent. I have no heart but offer pleasure as well as death. No man can own me, yet I encompass what all men must have. What am I?

Manish and Manoj play 5 games of chess.
Both Manish and Manoj win the exact same number of games. There is no tie at all.

How?