4th completed and explained.

Author: Payman IB

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

@@ -7,3 +7,12 @@ 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
+
+console.log(num);
+
+// this will make a random number between 1-100. Math.random will give us a number between 0-1 (both ends included). 
+// (maximum - minimum + 1): this is equal to 100-1+1=100 in this example.
+// (Math.random() * (maximum - minimum + 1)): this will multiply the random number which is between 0-1 by 100 so we have a number. 
+// Math.floor: this will round the number to the nearest lower whole number.
+// + minimum: will add 1 (the defined minimum) to the number so it never be below 1.
+// so we end up with a random number between 1-100