Complete the table series riddle by finding the number that can replace "??".

In the formation, you can see a few arranged matchsticks. Can you form three squares by moving just three matchsticks?

John walks into the daily grocery shop and steals a $100 bill from the shop. An hour later John returns to the shop and buys some daily products for $40. John pays the owner the $100 bill and therefore the owner returns him $60.

How much money did the owner lose?

This is a classy optical illusion puzzle. What more you can find except bricks in the image below?

In the Wild West, you are challenged into a death match by two bounty hunters nicknamed Golden Revolver (GR) and Killer Boots (KB). You accept the challenge. None of you want to waste any of the bullet and so a certain rules are laid down:

1) All of you will shoot in a given order till the last man standing.
2) Each of you shoots only once upon his turn.
3) If any one of you is injured, the other two will finish him off with an iron rod.
4) The worst shooter of all (which is you) shoots first and the best one shoots at the last.

Now, how will you plan things if you know that you hit every third shot of yours, KB hits every second shot and GR hits every shot ?

Can you find out the number that should replace the question mark with a valid reason?

What goes through cities and fields, but never moves?

Name one eight-letter word with 'kst' in the middle, 'in' the beginning, 'and' at the end.?

What has 13 hearts but no other organs?

who is silent in the parliament?