diff --git a/index.js b/index.js
index 294f6b2..6867c60 100644
--- a/index.js
+++ b/index.js
@@ -7,12 +7,9 @@ const s3 = "Ted";
 const s4 = "bread";
 const s5 = "and";
 
-// Concatenate the string variables into one new string
-
-
-// Print out the concatenated string
-
-
+const tongueTwister = `${s1} ${s2} ${s3} ${s4} ${s5} ${s3} ${s2} ${s1} ${s4}`;
+console.log(tongueTwister); 
+// Output: "Fred fed Ted bread and Ted fed Fred bread"
 
 
 /*******************************************
@@ -21,56 +18,50 @@ const s5 = "and";
 const part1 = "java";
 const part2 = "script";
 
-// Convert the last letter of part1 and part2 to uppercase and concatenate the strings
-
-
-// Print the cameLtaiL-formatted string
-
+const result = part1.slice(0, -1) + part1.slice(-1).toUpperCase() +
+               part2.slice(0, -1) + part2.slice(-1).toUpperCase();
 
+console.log(result); 
+// Output: "javAscripT"
 
 
 /*******************************************
     Iteration 2.1 | Calculate Tip
 *******************************************/
 const billTotal = 84;
+const tipAmount = billTotal * 0.15;
 
-// Calculate the tip (15% of the bill total)
-
-
-// Print out the tipAmount
-
-
+console.log(tipAmount); 
+// Output: 12.6
 
 
 /*******************************************
     Iteration 2.2 | Generate Random Number
 *******************************************/
+const randomNumber = Math.floor(Math.random() * 10) + 1;
 
-// Generate a random integer between 1 and 10 (inclusive)
-
-
-// Print the generated random number
-
+console.log(randomNumber); 
+// Output: any integer between 1 and 10
 
 
 /*******************************************
     Iteration 3.1 | Booleans
 *******************************************/
-
 const a = true;
 const b = false;
 
-// Try and guess the output of the below expressions first and write your answers down:
-const expression1 = a && b;
-
-const expression2 = a || b;
-
-const expression3 = !a && b;
-
-const expression4 = !(a && b);
-
-const expression5 = !a || !b;
-
-const expression6 = !(a || b);
-
-const expression7 = a && a;
\ No newline at end of file
+const expression1 = a && b;  // false
+const expression2 = a || b;  // true
+const expression3 = !a && b; // false
+const expression4 = !(a && b);// true
+const expression5 = !a || !b;// true
+const expression6 = !(a || b);// false
+const expression7 = a && a;  // true
+
+console.log(expression1);
+console.log(expression2);
+console.log(expression3);
+console.log(expression4);
+console.log(expression5);
+console.log(expression6);
+console.log(expression7);