what does the below math rebus puzzle mean?

I know there are two methods by using three time the same number with a plus(+) operator , you can make sum as 60.

One of them is 20+20+20.

whats the other way ?

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

John’s parents have three sons: Snap, Crackle, and what’s the name of the third son?

One day, I thought of ways that can be used for creating a palindrome. So I decided that I will turn into a larger number by adding the reversed digits to the original number and keep doing it till I finally obtained a palindrome.

I am not sure if this process will always result in a palindrome eventually but I was able to produce a four-digit palindrome. Can you guess my starting number?

If,

20 % 5 = 24

21 % 7 = 33

42 % 6 = 67

Then;

66 % 6 = ?

Be active and find the killer in the picture Riddle below.

Why is a river so rich ?

Six glasses are in a row. The first three are filled with milk and the last three are empty. By moving only one glass, can you arrange them so that the full and the empty glasses alternate?

If it took eight men ten hours to build a wall, how long would it take four men to build it?