what does this picture(rebus) riddle means ?

Here is a mathematical expression that also secretly tells a movie name. What movie is that?

A pond had 60 fish, out of which, all but 20 died.
How many fishes are now present in that pond?

A 3 digit number is such that it's unit digit is equal to the product of the other two digits which are prime. Also, the difference between it's reverse and itself is 396.

What is the sum of the three digits?

Complete the table series riddle by finding the number that can replace "??".

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

You measure my life in hours
I serve you by expiring
I vanish faster when I am thin
and slower when I am thick
The wind is my energy
What am I?

Jigsaw captured 100 people and make them stand in a circle and all these people are labelled as Person1, Person2, Person3... Person100. He made them play a crazy game in which Person 1 shot Person 2 and pass the gun to the next person and so on until one stands alive.

Which person will survive in the end?

Name one eight-letter word with 'kst' in the middle, 'in' the beginning, 'and' at the end.?

In the given picture, in how many ways can you read the word "Tiger"?