Uploading my previous Solution to submit it for review

mathGame.cparkes1/GameResult.cs

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+public class GameResult
+{
+    public int Score { get; set; }
+    public TimeSpan Time {  get; set; }
+
+    public GameResult(int score, TimeSpan time)
+    {
+        Score = score;
+        Time = time;
+    }
+
+    public override string ToString()
+    {
+        return $"Score: {Score} | Time: {Time:mm\\:ss\\.fff}";
+    }
+}

mathGame.cparkes1/Program.cs

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+using System.Data;
+using System.Numerics;
+using System.Diagnostics;
+using System.Collections.Generic;
+using System.Linq;
+
+Random random = new Random();
+List<GameResult> scoreHistory = new();
+
+string userSelection = "";
+
+while (true)
+{
+    int score = 0;
+    int turnCounter = 0;
+
+    Console.Clear();
+    Console.WriteLine("""
+        What Mathematical operator do you want?
+        +       Answer 5 Addition Questions
+        -       Answer 5 Subtraction Questions
+        *       Answer 5 Multiplication Questions
+        /       Answer 5 Division Questions
+        Scores  Show the previous Scores
+        Exit    Exit the Program
+        """);
+
+    userSelection = Console.ReadLine() ?? "";
+
+    if (userSelection.ToLower() == "exit")
+    {
+        break;
+    }
+    else if (userSelection.ToLower() == "scores")
+    {
+        Console.Clear();
+        if (scoreHistory.Count == 0)
+        {
+            Console.WriteLine("No scores yet.");
+            Console.WriteLine("Press enter to return to main menu");
+            Console.ReadLine();
+        }
+
+        List<GameResult> sortedLeaderboard = scoreHistory
+            .OrderByDescending(r => r.Score)
+            .ThenBy(r => r.Time)
+            .ToList();
+
+        Console.WriteLine("Previous Scores:");
+        foreach (var s in sortedLeaderboard)
+            Console.WriteLine(s);
+        Console.WriteLine("Press enter to return to main menu");
+        Console.ReadLine();
+        continue;
+    }
+    else if (userSelection != "+" && userSelection != "-" && userSelection != "*" && userSelection != "/")
+    {
+        Console.Clear();
+        Console.WriteLine("Invalid Option. Please try again.");
+        Console.WriteLine("Press enter to return to main menu");
+        Console.ReadLine();
+    }
+
+    Console.Clear();
+    long startTime = Stopwatch.GetTimestamp();
+    do
+    {
+        int firstNumber = random.Next(101);
+        int secondNumber = random.Next(101);
+        int expectedSolution = 0;
+
+        if (userSelection.Equals("/") && firstNumber == 0 || userSelection.Equals("/") && secondNumber == 0 || userSelection.Equals("/") && firstNumber % secondNumber != 0)
+        {
+            firstNumber = random.Next(101);
+            secondNumber = random.Next(101);
+            continue;
+        }
+
+        Console.Write($"{firstNumber} {userSelection} {secondNumber} = ");
+        string? input = Console.ReadLine();
+        if (!int.TryParse(input, out int userSolution))
+        {
+            Console.WriteLine("\nInvalid input. Please enter an integer.");
+            continue;
+        }
+
+        switch (userSelection)
+        {
+            case "+": expectedSolution = firstNumber + secondNumber; break;
+            case "-": expectedSolution = firstNumber - secondNumber; break;
+            case "*": expectedSolution = firstNumber * secondNumber; break;
+            case "/": expectedSolution = firstNumber / secondNumber; break;
+        }
+        ;
+
+        if (userSolution == expectedSolution)
+        {
+            Console.WriteLine("\n Correct\n");
+            score++;
+        }
+        else
+        {
+            Console.WriteLine("\nIncorrect\n");
+        }
+
+        turnCounter++;
+    } while (turnCounter < 5);
+
+    TimeSpan elapsedTime = Stopwatch.GetElapsedTime(startTime);
+    string formattedElapsedTime = elapsedTime.ToString(@"mm\:ss\.fff");
+    Console.WriteLine($"Congrats you got {score} points in {formattedElapsedTime}");
+    scoreHistory.Add(new GameResult(score, elapsedTime));
+    Console.WriteLine("Press enter to return to main menu");
+    Console.ReadLine();
+}
+

mathGame.cparkes1/mathGame.cparkes1.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net10.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+</Project>

mathGame.cparkes1/mathGame.cparkes1.slnx

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+<Solution>
+  <Project Path="mathGame.cparkes1.csproj" />
+</Solution>