### How to

# How to Unlock Puzzle Door 17/8 in Arithmancy Class – Hogwarts Legacy

For this puzzle, Math is your best friend.

Being a student in Hogwarts Legacy does not mean math won’t be a part of your lessons. After all, you have the **Arithmancy Class** which involves studying the magical properties of numbers.

Arithmancy is also needed to solve a door called the Arithmancy door. One of these is the** 17/8 door**, and we will show you how to open it.

# Opening the 17/8 Arithmancy Door

Source: GosuNoob

The **Arithmancy Study Guide Page** will help you solve an Arithmancy door with ease. However, you still can solve the puzzle without it.

Source: GosuNoob

You must remember that there are **10 beast symbols, each representing a number starting from 0 to 9**. An Arithmancy door is surrounded by these symbols.

In order starting from the left, the symbols represent 0 to 9. The Arithmancy door that you can find within the Arithmancy Class has the **numbers 17 and 8**.

Source: GosuNoob

The upper number is 17 surrounded by a triangle with the **number 6, a beast symbol, and an unknown number**. 17 is the sum of the three numbers, with the knowledge about the beast symbols and the number they represent.

The symbol in 17 is the number 5, which means **5+6+?=17**. If we add the two numbers and subtract them from the sum, we will get** **6.

This means you should** roll the dial with a ? to the Salamander symbol** representing the number 6.

Source: GosuNoob

**Below 17 is the number 8**. Similar to how we solve number 17, we add the numbers surrounding 8 and then **find the correct beast symbol to represent ??**.

The equation for 8 is 0+ a beast symbol + ??. The beast symbol in the equation represents the number 7. This will make the equation **0+7+??=8**, making **?? equal to 1** which is the **Unicorn symbol**.

With that in mind, simply **roll the ?? dial into a Unicorn** to open the door.

**ALSO READ: **Hogwarts Legacy: Door Puzzle 24/14 Solution