Executing Parallel Tasks in c# example

Program.cs

using System;
using System.Threading.Tasks;
using System.Threading;
using System.Collections.Generic;

namespace parallel_tasks
{
    class Program
    {
        static async Task Main(string[] args)
        {
            var tasks = new List<Task<string>>
            {
                Task.Run(() => doStuff("Task 0", 700)),
                Task.Run(() => doStuff("Task 1", 300)),
                Task.Run(() => doStuff("Task 2", 500))
            };

            var task = await Task.WhenAny(tasks.ToArray());
            Console.WriteLine(task.Result + " completed");
        }

        static string doStuff(string strName, int milliseconds)
        {
            for (int i = 1; i <= 3; i++)
            {
                // Thread.Yield();
                Thread.Sleep(milliseconds);
                Console.WriteLine(strName + ": " + i.ToString());
            }

            return strName;
        }
    }
}