diff --git a/Sprint-1/1-key-exercises/1-count.js b/Sprint-1/1-key-exercises/1-count.js
index 117bcb2b6e..87856f6a4f 100644
--- a/Sprint-1/1-key-exercises/1-count.js
+++ b/Sprint-1/1-key-exercises/1-count.js
@@ -4,3 +4,13 @@ count = count + 1;
 
 // Line 1 is a variable declaration, creating the count variable with an initial value of 0
 // Describe what line 3 is doing, in particular focus on what = is doing
+/*Line 3 is updating the value of the variable `count`. 
+The `=` operator is an assignment operator, 
+which means it takes the value on the right side 
+(in this case, `count + 1`) 
+and assigns it to the variable on the left side (`count`). 
+So, it takes the current value of `count`, adds 1 to it, 
+and then stores that new value back into `count`. 
+in general, Line 3 is incrementing the value of `count` by 1.
+*/
+
diff --git a/Sprint-1/1-key-exercises/2-initials.js b/Sprint-1/1-key-exercises/2-initials.js
index 47561f6175..0a1e1535c0 100644
--- a/Sprint-1/1-key-exercises/2-initials.js
+++ b/Sprint-1/1-key-exercises/2-initials.js
@@ -5,7 +5,7 @@ let lastName = "Johnson";
 // Declare a variable called initials that stores the first character of each string.
 // This should produce the string "CKJ", but you must not write the characters C, K, or J in the code of your solution.
 
-let initials = ``;
-
+let initials = `${firstName[0]}${middleName[0]}${lastName[0]}`;
+console.log(initials);
 // https://www.google.com/search?q=get+first+character+of+string+mdn
 
diff --git a/Sprint-1/1-key-exercises/3-paths.js b/Sprint-1/1-key-exercises/3-paths.js
index ab90ebb28e..8864e5ff77 100644
--- a/Sprint-1/1-key-exercises/3-paths.js
+++ b/Sprint-1/1-key-exercises/3-paths.js
@@ -17,7 +17,8 @@ console.log(`The base part of ${filePath} is ${base}`);
 // Create a variable to store the dir part of the filePath variable
 // Create a variable to store the ext part of the variable
 
-const dir = ;
-const ext = ;
-
+const dir = filePath.slice(0,lastSlashIndex);
+const ext = base.slice(base.lastIndexOf("."));
+console.log (`The directory is : ${dir}
+The extension is : ${ext}`);
 // https://www.google.com/search?q=slice+mdn
\ No newline at end of file
diff --git a/Sprint-1/1-key-exercises/4-random.js b/Sprint-1/1-key-exercises/4-random.js
index 292f83aabb..2204d16132 100644
--- a/Sprint-1/1-key-exercises/4-random.js
+++ b/Sprint-1/1-key-exercises/4-random.js
@@ -4,6 +4,15 @@ const maximum = 100;
 const num = Math.floor(Math.random() * (maximum - minimum + 1)) + minimum;
 
 // In this exercise, you will need to work out what num represents?
+        //   num represents a random integer between 1 and 100.
 // 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
+    // breaking down the expression into smaller parts.
+/* Math.floor(): this will return the largest integer less than or equal to a given number. In this case, it will round down the result of the expression inside the parentheses.
+Math.random(): this will return a random floating-point number between 0 (inclusive) and 1 (exclusive). In this case, it will generate a random number between 0 and 1 but never exactly 1.
+(maximum - minimum + 1): this will calculate the range of numbers we want to generate. In this case, it will calculate the difference between the maximum and minimum values (100 - 1 = 99) 
+and add 1 to include both endpoints (99 + 1 = 100).
+finally, the code adds the minimum value (which is 1) to the result.
+*/
+