using System.Collections.Generic;
public static void Main()
IEnumerable<string> list = new List<string> {"zA", "zB", "C"}.AsEnumerable();
Console.WriteLine(list.ContainsAny("zA", "zB"));
Console.WriteLine(list.ContainsAny("zA", "A"));
Console.WriteLine(list.ContainsAny("zC", "A"));