## Can You Crack The Code? The Missing Number in 1 1 2 3 5 9

This sequence might seem random at first glance, but there's a hidden pattern waiting to be discovered. Are you ready to put your brain to the test?

### The Pattern:

The sequence follows a simple rule: **Each number is the sum of the two previous numbers.**

Let's break it down:

**1 + 1 = 2****1 + 2 = 3****2 + 3 = 5****3 + 5 = 8****5 + 8 = 13**

### The Missing Number:

The missing number is **8**.

The complete sequence is: **1 1 2 3 5 8 13**

This sequence is known as the **Fibonacci sequence**, named after the Italian mathematician Leonardo Fibonacci. It appears frequently in nature, art, and even computer science.

### Challenge Yourself:

Want to keep the puzzle going? Try extending the sequence further! What number comes after 13?