Fix comments and add interval notation

Author: arunkumarakilan

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

@@ -4,10 +4,10 @@ const maximum = 100;
 const num = Math.floor(Math.random() * (maximum - minimum + 1)) + minimum;
 console.log(num);
 // In this exercise, you will need to work out what num represents?
-// num represents random whole number between 1 to 100
+// num represents random whole number in the interval [1,100]
 //It is generated by:
-//Creating a random decimal between 0 and 1 using Math.random()
-//Scaling it to the range 1 to 100
+//Creating a random decimal in the interval[0'1)] using Math.random()
+//Scaling it to in the interval [1,100]
 //Rounding it down using Math.floor() so it becomes an integer
 
 // Try breaking down the expression and using documentation to explain what it means