using System;

using System.Linq;

​

using System.Collections.Generic;

​

public class Program

{

    public static void Main()

    {

        int[] x = {1,2,3,4,5};

        var y = x.Where(z => z ==6);

        Console.Write(y == null );

        Console.Write( "\n");

        Console.Write( "y is an ienumerable   = " + y + "\n");

        Console.Write(y.Count() + "\n");

        Console.Write(y.Any());

    }

}