Now that you've grasped the basics of coding, it's time to put your newfound skills to the test.
Here's a puzzle for you:
Imagine a many-armed band-aid with 17 arms. Each arm has a number written on it, ranging from 1 to 17.
What number is missing from the band-aid?
Don't just look at it, think about it.
Hint: The answer is not 13.
You can find more information on the secret solutions page.
Or, if you're feeling adventurous, you can try another puzzle.