Question a Threading

I cannot believe somebody ask the expected result regarding threading.
I came across to find out and prove if he is correct.

The code snippet :

   class Program
    {
        static void Main(string[] args)
        {
            Thread s1 = new Thread(Display1);
            Thread s2 = new Thread(Display2);

            s1.Start();
            s2.Start();
            for (var i = 0; i <= 10; i++)
            {
                Console.WriteLine(string.Format("Main 1 : {0}", i.ToString()));
            }

            Console.ReadKey();
        }

        static void Display1()
        {
            for (var i = 0; i <= 10; i++)
            {
                Console.WriteLine(string.Format("Display 1 : {0}", i.ToString()));
            }
        }

                static void Display2()
        {
            for (var i = 0; i <= 10; i++)
            {
                Console.WriteLine(string.Format("Display 2 : {0}", i.ToString()));
            }
        }
    }

According to the questionaire, the correct answer would be
1. Display 1: 0 to Display 1: 10
2. Main 1: 0 to Main 1: 10
3. Display 2: 0 to Display 2: 10

As I execute the code, it seems to negate the statement. It would display, different display everytime I will execute. This is because, there is a timing or a specific period of time where a thread will start. But most of the time, it should go as expected.

some output :



If anybody wants to understand and have a good start regarding THREADING.
you can start from here.

http://msdn.microsoft.com/en-us/library/aa645740(v=vs.71).aspx