Completed exercise 4

Author: A-Moiz

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

@@ -7,3 +7,10 @@ const num = Math.floor(Math.random() * (maximum - minimum + 1)) + minimum;
 // Try breaking down the expression and using documentation to explain what it means
 // It will help to think about the order in which expressions are evaluated
 // Try logging the value of num and running the program several times to build an idea of what the program is doing
+
+// Math.random() generates a random decimal number between 0 and 1.
+// Since the minimum is 1 and maximum is 100 the bracket (maximum - minimum + 1) will always equal 100.
+// The random decimal number is then multiplied by 100, resulting in a random decimal number between 0 and 100.
+// Math.floor() then rounds this decimal number down to the nearest whole number.
+// Finally, the minimum value (1) is added
+// Resulting in a final value of num being a random whole number between 1 and 100.