What is the next number in this matchsticks series riddle?

Count the number of lines in the image below ?

Here is what you have to do. You have to throw a ball as hard as you can but it must return back to you even if it does not bounce at anything. Also, you have nothing attached to the ball. There is no one on the other end to catch that ball and throw it back at you.

How will you do it?

Which is the correct shadow of the bird?

If you're 8 feet away from a door and with each move you advance half the distance to the door. How many moves will it take to reach the door?

What question can you never answer yes to?

What makes this number unique: 8,549,176,320?

Irene killed hundreds of people mercilessly and yet the police were not able to put her behind the bars. Why?

There are four 3-link chains. All you have to do is join them into a big 12-link chain. For joining two closed links, one of the links must be cut and placed onto the other link for closing.

How many minimum links will you have to cut to make the big chain?

A woman lives in a skyscraper thirty-six floors high and is served by several elevators which stop at each floor going up and down. Each morning she leaves her apartment and goes to one of the elevators. Whichever one she takes is three times more likely to be going up than down. Why?