Program to Find the Indexes in the List

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace AmatyaListConcept
{
    class Program
    {
        static void Main(string[] args)
        {
            //List<char> Lst1 = new List<char>();
            List<string> LstAmatya = new List<string>();
            LstAmatya.Add("Apple");
            LstAmatya.Add("Mango");
            LstAmatya.Add("Apple");
            LstAmatya.Add("Banana");

            var result = Enumerable.Range(0, LstAmatya.Count)
             .Where(i => LstAmatya[i] == "Apple")
             .ToList();

            Console.ReadLine();

        }
    }
}