Explain random number expressions

Author: Jestavo1

Sprint-2/1-key-exercises/4-random.js

@@ -7,3 +7,15 @@ console.log(num);
 // 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
+
+// 1. Math.random() produces a random decimal number in the range [0, 1).
+// 0 is included, but 1 is not included.
+
+// 2. Math.random() * (maximum - minimum + 1) produces a random decimal
+// number in the range [0, 100), because maximum - minimum + 1 = 100.
+
+// 3. Math.floor(Math.random() * (maximum - minimum + 1)) rounds the
+// decimal number down and produces a random whole number from 0 to 99.
+
+// 4. Math.floor(Math.random() * (maximum - minimum + 1)) + minimum
+// adds 1 to the result, producing a random whole number from 1 to 100.