Can you find out who is the kidnapper in below Picture and why, Explain ?

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 next number in the pattern below:

131 517 192 123 ?

A man died, leaving $10,000,000 for his widow, 5 sons and 4 daughters. Each daughter received an equal amount, each son received twice as much as a daughter, and the widow received three times as much as a son.

How much did the widow receive?

A word I know,
Six letters contain,
Subtract just one,
And twelve is what remains.

What will you call your mother's brother's brother-in-law?

There are 20 people in an empty, square room. Each person has full sight of the entire room and everyone in it without turning his head or body, or moving in any way (other than the eyes). Where can you place an apple so that all but one person can see it?

What month of the year has 28 days?

In one of the popular batman series movie "Batman Forever", there was a riddle that goes like "Tear me off and then scratch my head and I was red then and now I am back. Who am I?

Take 9 from 6, 10 from 9, 50 from 40, and leave 6.

How Come ??