diff --git a/index.js b/index.js
index 294f6b2..12f036e 100644
--- a/index.js
+++ b/index.js
@@ -8,9 +8,10 @@ const s4 = "bread";
 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);
 
 
 
@@ -22,9 +23,37 @@ const part1 = "java";
 const part2 = "script";
 
 // Convert the last letter of part1 and part2 to uppercase and concatenate the strings
+const palabraUno = part1.slice(0,-1) + part1[part1.length-1].toUpperCase();
+const palabraDos = part2.slice(0,-1) + part2[part2.length-1].toUpperCase();
+const result = palabraUno + palabraDos;
+
+// Second method
+// This was what inmediately came to my mind, but we didn't know whether we were allowed to use loops. I know it involves more coding, but I think is easier to understand)
+
+// let palabra1 = "";
+// let palabra2 = "";
+
+// for (let i = 0; i < part1.length; i++) {
+//     if(i === (part1.length -1)){
+//         palabra1 += part1[i].toUpperCase();
+//     } else{
+//         palabra1 += part1[i];
+//     }
+// }
+
+// for (let i = 0; i < part2.length; i++) {
+//     if(i === (part2.length -1)){
+//         palabra2 += part2[i].toUpperCase();
+//     } else{
+//         palabra2 += part2[i];
+//     }
+// }
+// const resultado = palabra1+palabra2;
 
 
 // Print the cameLtaiL-formatted string
+console.log(result);
+// console.log(resultado);
 
 
 
@@ -35,9 +64,10 @@ const part2 = "script";
 const billTotal = 84;
 
 // Calculate the tip (15% of the bill total)
-
+const tipAmount = (billTotal*15)/100;
 
 // Print out the tipAmount
+console.log(tipAmount);
 
 
 
@@ -47,9 +77,10 @@ const billTotal = 84;
 *******************************************/
 
 // Generate a random integer between 1 and 10 (inclusive)
-
+const randomNumber = Math.floor(Math.random()*11)
 
 // Print the generated random number
+console.log(randomNumber);
 
 
 
@@ -61,16 +92,23 @@ 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; //false
+console.log(expression1);
 
-const expression2 = a || b;
+const expression2 = a || b; //true
+console.log(expression2);
 
-const expression3 = !a && b;
+const expression3 = !a && b; //false
+console.log(expression3);
 
-const expression4 = !(a && b);
+const expression4 = !(a && b); //true
+console.log(expression4);
 
-const expression5 = !a || !b;
+const expression5 = !a || !b; //true
+console.log(expression5);
 
-const expression6 = !(a || b);
+const expression6 = !(a || b); //false
+console.log(expression6);
 
-const expression7 = a && a;
\ No newline at end of file
+const expression7 = a && a; //true
+console.log(expression7);
\ No newline at end of file