Replace the question mark with the correct number in the below-given picture?

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?

A large container is kept in open under the rain. Every passing hour, the water collected inside the container becomes double what it was.

In ten hours, the container is filled completely. Can you calculate how long would it have taken to be filled in half?

What is red and smells like blue paint?

Five teams were competing in cricket where they faced each other exactly once. After the tournament, the following is the point table.

DareDevils 6
SuperKings 5
Royals 4
Sunrisers 2
Riders ?

How many points did Riders end up with?

I taste better than I can smell. Who am I?

What does this rebus mean?

O
N
C
E
TIME

There is a movie name hidden in the picture that is attached with this question. Can you find out which movie is it?

Why 1729 is a magic number? Answer Logically.

Can you solve the tricky chess rebus puzzle below by ciphering the hidden meaning?