Main.cs

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

class Program
{
  static void Main(string[] args)
  {
    IEnumerable<int> counter = Enumerable.Range(0, 10);
    var linqWhere = counter.Where(item => item > 3 && item < 8);
    foreach(int i in linqWhere)
      Console.Write(i);
    
    Console.WriteLine("");
    var linqWhere2 = counter.Where(item => item > 3).Where(item => item < 8);
    foreach(int i in linqWhere2)
      Console.Write(i);
  }
}