Check what the value " +1" represent in the code

Author: Della-Bella

Sprint-1/1-key-exercises/4-random.js

@@ -2,6 +2,7 @@ const minimum = 1;
 const maximum = 100;
 
 const num = Math.floor(Math.random() * (maximum - minimum + 1)) + minimum;
+//const num = Math.floor(Math.random() * (maximum - minimum)) + minimum;
 console.log(num);
 
 // In this exercise, you will need to work out what num represents?