diff --git a/index.js b/index.js
index 294f6b2..53fe335 100644
--- a/index.js
+++ b/index.js
@@ -9,9 +9,11 @@ const s5 = "and";
 
 // Concatenate the string variables into one new string
 
+const tongueTwister = `${s1} ${s2} ${s3} ${s4} ${s5} ${s3} ${s2} ${s1} ${s4}`
 
 // Print out the concatenated string
 
+console.log(tongueTwister)
 
 
 
@@ -23,9 +25,18 @@ const part2 = "script";
 
 // Convert the last letter of part1 and part2 to uppercase and concatenate the strings
 
+const lasLetter1 = part1[part1.length - 1].toUpperCase()
+const lasLetter2 = part2[part2.length - 1].toUpperCase()
+
+const pair1 = part1.slice(0 , part1.length - 1 );
+const pair2 = part2.slice(0 , part2.length - 1 );
+
+const result = `${pair1}${lasLetter1}${pair2}${lasLetter2}`
 
 // Print the cameLtaiL-formatted string
 
+console.log(result)
+
 
 
 
@@ -36,10 +47,12 @@ const billTotal = 84;
 
 // Calculate the tip (15% of the bill total)
 
+const tipPor = 0.15;
+const tipAmount = billTotal * tipPor;
 
 // Print out the tipAmount
 
-
+console.log(tipAmount)
 
 
 /*******************************************
@@ -48,10 +61,11 @@ const billTotal = 84;
 
 // Generate a random integer between 1 and 10 (inclusive)
 
+const number = Math.random() * (10 - 1) + 1;
 
 // Print the generated random number
 
-
+console.log(Math.round(number));
 
 /*******************************************
     Iteration 3.1 | Booleans
@@ -73,4 +87,12 @@ const expression5 = !a || !b;
 
 const expression6 = !(a || b);
 
-const expression7 = a && a;
\ No newline at end of file
+const expression7 = a && a;
+
+// 1. false
+// 2. true
+// 3. false
+// 4. true
+// 5. true
+// 6. false
+// 7. true
\ No newline at end of file