Find the next number in the sequence

5 12 24 36 ?

I come in different shapes and sizes.
Parts of me are curved, other parts are straight.
You can put me anywhere you like,
but there is only one right place for me.
What am I?

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

What has many teeth, but cannot bite?

A Child was born in Lahore, Pakistan. Still, the child is not a Pakistani citizen. why?

Can you find out the remainder when 3^300 is divided by 5?

What comes
Once in a Year
Twice in a Month
4 times in a Week
6 times in a Day

Krish is 45 years old and his mother Crishtina is 73 years old.

Can you find out how many years ago, his mother was three times his age?

You see me once in June, twice in November, and not at all in May. What am I?

It can't be seen, can't be felt, can't be heard, and can't be smelt.
It lies behind stars and under hills, And empty holes it fills.
It comes first and follows after, Ends life, and kills laughter.
What is it?