using System.Threading.Tasks;
using System.Collections.Generic;
Console.WriteLine("Hello World");
var T2 = Sum(T1.Result, 7);
var T3 = Sum(T2.Result, 7);
var listOfTasks = new List<Task>{T1,T2,T3};
await Task.WhenAll(listOfTasks);
public async Task<int> Sum(int num1, int num2){
return await Task.Factory.StartNew(() => {