What is the coolest letter in the alphabet?

You need to move three matchsticks to form three squares. Can you do it?

Why do people go to bed?

A man was telling some of his war stories to his grandchildren.
"When the World War I was on the verge of end, I was awarded for my bravery for I had saved a group of my men." He coughed and then added, "When we were fighting in northern France, an enemy soldier threw a grenade at us. Before it could explode, I picked it up and threw it away. For my act of bravery, right before the war ended, A General gave me a sword engraved with the words "Awarded for Display of Bravery and Heroism in World War 1"."

Hearing this, one of the grandson spoke up. "Grandpa, this is not a true story. It can"t be true!"

The truth is that it was not. How did the grand children know it?

What is the fewest number of coins that would be required in order to make sure each and every coin touches exactly three other coins?

How can you take 2 from 5 and leave 4?

What is full of holes but still holds water?

What has no start, end, or centre?

In the picture, you can see a chess board. On the top left position, the K marks a knight. Now, can you move the knight in a manner that after 63 moves, the knight has been placed at all the squares exactly once excluding the starting square?

What does below Rebus say?

XLR8