Decode below three cipher riddles:

26 L of the A
7 D of the W
1000 Y in a M

I have a five and a three-gallon jar. Assuming there is an infinite supply of water, how can I measure one-gallon water?

our enemy challenges you to play Russian Roulette with a 6-cylinder pistol (meaning it has room for 6 bullets). He puts 2 bullets into the gun in consecutive slots, and leaves the next four slots blank. He spins the barrel and hands you the gun. You point the gun at yourself and pull the trigger. It doesn't go off. Your enemy tells you that you need to pull the trigger one more time, and that you can choose to either spin the barrel at random, or not, before pulling the trigger again. Spinning the barrel will position the barrel in a random position.

Assuming you'd like to live, should you spin the barrel or not before pulling the trigger again?

Most people think of me as money. But when they find me in the water, they won’t get any money out of me. What am I?

He loves to dance, twist and prance, he shakes his tail, and as a way he sails, wingless he flies into the sky. What is he?

An infinite number of mathematicians are standing behind a bar. The first asks the barman for half a pint of beer, the second for a quarter pint, the third an eighth, and so on. How many pints of beer will the barman need to fulfill all mathematicians' wishes?

Is the statement valid that it does not matter how much older a sibling is, eventually the younger one will be half as old as the older one?

A girl rode into a tourist spot out of the city on Thursday. She loved the place and decided to stay for a few days. She stayed for four days and then she left for back home on Thursday.

How can this be possible?

Why do you find that most of the buildings are deprived of the 13th floor?

Two in a corner, one in a room, zero in a house, but one in a shelter. What is it?