using System;
using System.Collections.Generic;
using System.Linq;
public class Program
{
public static void Main()
var arr = new [] { 1, 2, 3, 4, 5, 6, 7 };
var index = 3; // start with number 4
var itemsToPeek = 3;
var numbers = arr.Skip(index).Take(itemsToPeek);
Console.WriteLine(string.Join(",", numbers));
}