diff --git a/index.js b/index.js
index 294f6b2..a101c3b 100644
--- a/index.js
+++ b/index.js
@@ -9,9 +9,12 @@ const s5 = "and";
 
 // Concatenate the string variables into one new string
 
+tongueTwister = `${s1} ${s2} ${s3} ${s4} ${s5} ${s3} ${s2} ${s1} ${s4}`;
 
 // Print out the concatenated string
 
+console.log(tongueTwister);
+
 
 
 
@@ -23,9 +26,17 @@ const part2 = "script";
 
 // Convert the last letter of part1 and part2 to uppercase and concatenate the strings
 
+const charA = part1[part1.length -1].toUpperCase();
+const charT = part2[part2.length -1].toUpperCase();
+
+const partJav = part1.substring(0, part1.length - 1);
+const partScrip = part2.substring(0, part2.length - 1);
+
+const result = partJav + charA + partScrip + charT;
 
 // Print the cameLtaiL-formatted string
 
+console.log(result);
 
 
 
@@ -36,10 +47,11 @@ const billTotal = 84;
 
 // Calculate the tip (15% of the bill total)
 
+const tipAmount = billTotal * (15/100);
 
 // Print out the tipAmount
 
-
+console.log(tipAmount);
 
 
 /*******************************************
@@ -48,9 +60,13 @@ const billTotal = 84;
 
 // Generate a random integer between 1 and 10 (inclusive)
 
+random = Math.random() * (10 - 1) + 1;
+
+randomNumber = Math.round(random);
 
 // Print the generated random number
 
+console.log(randomNumber);
 
 
 /*******************************************
@@ -61,16 +77,36 @@ 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 expression1 = a && b; 
+
+console.log(expression1, false);
+
 
 const expression2 = a || b;
 
+console.log(expression2, true);
+
+
 const expression3 = !a && b;
 
+console.log(expression3, false);
+
+
 const expression4 = !(a && b);
 
+console.log(expression4, true);
+
+
 const expression5 = !a || !b;
 
+console.log(expression5, true);
+
+
 const expression6 = !(a || b);
 
-const expression7 = a && a;
\ No newline at end of file
+console.log(expression6, false);
+
+
+const expression7 = a && a;
+
+console.log(expression7, true);
\ No newline at end of file