Delegates and Events - General Questions

What is the output of the following program?

Action<string> greet = n => Console.Write("Hi " + n);
greet += n => Console.Write("!");
greet("Ann");

What does the event keyword add to a delegate field?

Which operator removes a handler from an event?

What is the output of the following program?

Func<int, int> sq = x => x * x;
Console.WriteLine(sq(6));

What is an anonymous method?