How can you use a nested `if` statement to check if a number is between 10 and 20, inclusive?
You can use this logic: `if(num >= 10) { if(num <= 20) { // number is between 10 and 20 } }`.
Well done! You've successfully used nested `if` statements to check if the number is within the given range.
Can you refactor the logic to combine the conditions into a single `if` statement?