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

You have 10 balls with you. A friend of yours out of nowhere asks you to place those ten balls in five lines such that each of the lines has exactly 4 balls on them. He needs to check your intelligence. Prove him by doing the task.

What is the fastest way to double your money?

Can you find the missing number in the third row?
35 20 14
27 12 18
5 2 ?

In an interview, a boy was asked an unusual question 'How two persons sitting with a table in between them can't see each other?' He was unable to reply. Can you?

A man is surviving on an island along with his friend. They have been starving for four days for food. Suddenly, they find a fisherman. The friend goes with the fisherman in order to catch the fish (if they can find any).

The fisherman returns after some time but he is alone and has some salmon that he had prepared. When asked, the fisherman tells him that his best friend fell off the boat and drowned in the water. Starving for so long, he eats the meal while crying for his friend.

After being rescued, he goes to a diner and orders salmon. When he eats his meal, he jumps and commits suicide. Why did he do it?

Find out the missing number in the picture attached:

You can take four of the five letters out of this word, but the pronunciation never changes. What is the word?

Take one out and scratch my head, I am now black but once was red. What am I?

If you had a pizza with crust thickness 'a' and radius 'z', what's the volume of the pizza?