using System;

using System.Collections.Generic;

using System.Text;

using System.Linq;

​

public class LINQFibonacci

{

    public static void Main(string[] args)

    {

        List<int> fibonacci = new List<int>()

        {1, 1, 2, 3, 5, 8, 13, 21, 34};

        double Average = fibonacci.Where(l => l % 2 == 1).Average();

        Console.WriteLine(Average);

    }

}