diff --git a/lesson_07/conditionals/.env.test b/lesson_07/conditionals/.env.test
index de8c44249..f811b9059 100644
--- a/lesson_07/conditionals/.env.test
+++ b/lesson_07/conditionals/.env.test
@@ -1 +1 @@
-HW_VERSION=your homework version here
\ No newline at end of file
+HW_VERSION=D
\ No newline at end of file
diff --git a/lesson_07/conditionals/src/lesson7.ts b/lesson_07/conditionals/src/lesson7.ts
index cc44be44c..028ee0e31 100644
--- a/lesson_07/conditionals/src/lesson7.ts
+++ b/lesson_07/conditionals/src/lesson7.ts
@@ -11,10 +11,13 @@ export function compareStrings(a: string, b: string): number {
   // The distance will be a number less than 0 if string `a` is lexicographically less than `b`, 1
   // if it is greater, and 0 if the strings are equal.
   const distance = computeLexicographicDistance(a, b);
-
-  // TODO(you): Finish this method.
-
+  if (distance < 0) {
+    return -1;
+  } else if (distance > 0) {
+    return 1;
+  } 
   return 0;
+
 }
 
 /**
@@ -24,7 +27,15 @@ export function compareStrings(a: string, b: string): number {
  * @return The factorial of n.
  */
 export function computeFactorial(n: number): number {
-  return 0;
+  if (n < 0) {
+    return 0;
+  }
+  let ans:number = 1;
+  for (let i = 1; i <=n; i++) {
+    ans*=i
+  }
+  
+  return ans;
 }
 
 /**
@@ -34,7 +45,24 @@ export function computeFactorial(n: number): number {
  * @return An array containing the first `n` Fibonacci values.
  */
 export function getFirstNFibonacciNumbers(n: number): number[] {
-  return [];
+  const result = [1,1];
+
+  // intial check to handle edge cases
+  if (n <= 0) {
+    return [];
+  } else if (n === 1) {
+    return [1];
+  } else if (n === 2) {
+    return result;
+  }
+
+  // Generate Fibonacci numbers starting from the third number
+  for (let i = 2; i < n; i++) {
+    result.push(result[i - 1] + result[i - 2]);
+  }
+
+
+  return result;
 }
 
 /**
@@ -56,14 +84,21 @@ export function binarySearch(
     // The range is not valid so just return -1.
     return -1;
   }
-
   const pivotIndex = Math.floor((start + end) / 2); // The index in the middle of the array.
 
   // TODO(you): Finish implementing this algorithm
-
   // If values[pivotIndex] is equal to value then return `pivotIndex`.
-  // Else if values[pivotIndex] is greater than the value, then
-  // call `binarySearch(values, start, pivotIndex - 1, value)` and return its value;
-  // Else call `binarySearch(values, pivotIndex + 1, end, value)` and return its value.
+  if (values[pivotIndex] === value) {
+    return pivotIndex;
+    // Else if values[pivotIndex] is greater than the value, then
+  } else if (values[pivotIndex] > value) {
+    // call `binarySearch(values, start, pivotIndex - 1, value)` and return its value;
+    return binarySearch(values, start, pivotIndex - 1, value);
+    // Else call `binarySearch(values, pivotIndex + 1, end, value)` and return its value.
+  } else {
+    return binarySearch(values, pivotIndex + 1, end, value);
+  }
+
+  console.log("Value not found in the array.");
   return -1;
 }
diff --git a/lesson_07/conditionals/src/part_d.ts b/lesson_07/conditionals/src/part_d.ts
index c30cbac2f..d8450772b 100644
--- a/lesson_07/conditionals/src/part_d.ts
+++ b/lesson_07/conditionals/src/part_d.ts
@@ -7,7 +7,7 @@
  * @returns
  */
 export function isWithinRange(num: number, min: number, max: number): boolean {
-  return false;
+  return num >= min && num <= max;
 }
 
 /**
@@ -19,7 +19,7 @@ export function isWithinRange(num: number, min: number, max: number): boolean {
  * @returns
  */
 export function isValidTriangle(a: number, b: number, c: number): boolean {
-  return false;
+  return a**2 + b**2 == c**2;
 }
 
 /**
@@ -30,5 +30,15 @@ export function isValidTriangle(a: number, b: number, c: number): boolean {
  * @returns
  */
 export function getSeason(month: number): string {
+
+  if (month >= 3 && month <= 5) {
+    return "Spring";
+  } else if (month >= 6 && month <= 8) {
+    return "Summer";
+  } else if (month >= 9 && month <= 11) {
+    return "Fall";
+  } else if (month === 12 || month === 1 || month === 2) {
+    return "Winter";
+  }
   return "Invalid month";
 }