Creating task, returning result and passing state with TaskFactory

UsingTaskFactory.cs

//Create a simple task using taskfactory 
Task.Factory.StartNew(() => { Console.WriteLine("Simple Task of Factory"); });

//Create a task using factory + Setting Task State + Returning Result
Task<int> T1 = Task.Factory.StartNew<int>(obj =>
{
    int a = (int)obj;
    return a * a;
}, 10);
Console.WriteLine("(Not)Simple Task of Factory" + T1.Result);