If 5 cats catch 5 mice in 5 minutes, how long will it take one cat to catch a mouse?

I guess 76.8% of readers will like this riddle.

What's the least number of people should read this post?

What is at the end of a rainbow?

How can you drop a raw egg from a height onto a concrete floor without cracking it?

People put me on the table and cut me but do not eat me. What am I?

Can you find out which number multiplied by itself will give the output as 12345678987654321?

There are two insects on a tile. Insect X is sitting on one side of the tile (point A) and Insect Y is sitting opposite on the other side of the tile (point B). Now both of them decide to change their position and thus X starts crawling to point B and Y starts crawling to point A. When they meet and pass each other in between, X takes 20 seconds to reach B and Y takes just 5 seconds to reach A.

Can you calculate the total time each of the insects took to change their positions?

John said, "If yesterday was tomorrow, today would be Friday."

When did John make this statement?

John has eleven friends. He has a bowl containing eleven apples. Now He wants to divide the eleven apples among his friends, in such a way that an apple should remain in his bowl.
How can He do it?

Jigsaw captured 100 people and make them stand in a circle and all these people are labelled as Person1, Person2, Person3... Person100. He made them play a crazy game in which Person 1 shot Person 2 and pass the gun to the next person and so on until one stands alive.

Which person will survive in the end?