diff --git a/Sprint-2/1-key-exercises/1-count.js b/Sprint-2/1-key-exercises/1-count.js
index 117bcb2b6..64993e223 100644
--- a/Sprint-2/1-key-exercises/1-count.js
+++ b/Sprint-2/1-key-exercises/1-count.js
@@ -4,3 +4,4 @@ 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
+//adds 1 to the value of count and then = operator stores that value in count variable
diff --git a/Sprint-2/1-key-exercises/2-initials.js b/Sprint-2/1-key-exercises/2-initials.js
index 964c9563c..e5e317ec7 100644
--- a/Sprint-2/1-key-exercises/2-initials.js
+++ b/Sprint-2/1-key-exercises/2-initials.js
@@ -5,6 +5,6 @@ const 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.
 
-const initials = ``;
+const initials = firstName[0] + middleName[0] + lastName[0];
 
 // https://www.google.com/search?q=get+first+character+of+string+mdn
diff --git a/Sprint-2/1-key-exercises/3-paths.js b/Sprint-2/1-key-exercises/3-paths.js
index ab90ebb28..cca4eeecc 100644
--- a/Sprint-2/1-key-exercises/3-paths.js
+++ b/Sprint-2/1-key-exercises/3-paths.js
@@ -17,7 +17,7 @@ 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 = filePath.slice(filePath.lastIndexOf(".") + 1);
 
-// https://www.google.com/search?q=slice+mdn
\ No newline at end of file
+// https://www.google.com/search?q=slice+mdn
diff --git a/Sprint-2/1-key-exercises/4-random.js b/Sprint-2/1-key-exercises/4-random.js
index 292f83aab..912943c22 100644
--- a/Sprint-2/1-key-exercises/4-random.js
+++ b/Sprint-2/1-key-exercises/4-random.js
@@ -7,3 +7,9 @@ const num = Math.floor(Math.random() * (maximum - minimum + 1)) + minimum;
 // 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
+
+//num represents a random whole number between 1 and 100
+// Math.random() produces a random decimal from 0 up to 1 .
+// Math.random() * 100 produces a decimal from 0 up to 100.
+// Math.floor() rounds the number down to a whole number, giving 0–99.
+// +minimum (+1) shifts that range to 1–100.