using System;

public class Program

{

    public static void Main()

    {

        bool? nullableTrueValue = true;

        bool falseValue = false;

        bool trueValue = true;

        Console.WriteLine("nullableTrueValue ?? trueValue && falseValue = {0}", nullableTrueValue ?? trueValue && falseValue);      

        Console.WriteLine("(nullableTrueValue ?? trueValue) && falseValue = {0}", (nullableTrueValue ?? trueValue) && falseValue);

    }

}