Music, even music shuffling, and Math are two completely different things. It seem there is no connection between two of those. Music depends on human's artistic thinking, but mathematics depends on logical thinking. Many people even did not know what is music shuffling. And as the result, many people did not know that the relationship between those two. So, let me show you about this.

Let's talk it in another way. We will feel bored if we kept listening songs in one order. So we will shuffle it. Shuffling the order of songs is really similar to people shuffling the cards. After people shuffling 52 cards, they will get 1068 ways to be arranged. In the same way, there will be tons of different ways after iPod shuffle your music collection!

Let's make it into a mathematics equation. For example, let's count the music in four different ways: 12345; 31245; 34125; 34512. From that we knew that there were 6 possibilities of each one, total is 24. But if we switch one of the number, we will have another 24 possibilities. And if you add this two playlists together, you got 48 different possibilities. That is so amazing!