using System;

using System.Collections.Generic;

​

public class Program

{

    public static void Main()

    {

        List<int> numbers = new List<int> {

            10, 20, 30, 40, 50, 60, 70, 80, 90, 100

        };

        List<int> removeNumbers = new List<int> {

            40, 50, 100

        };

        List<int> filteredNumbers = new List<int> ();   

        double sumFilNumbers = 0;       

        foreach(var num in numbers)

        {

            var exists = removeNumbers.Contains(num);

            if (!exists)

            {           

                filteredNumbers.Add(num);

                sumFilNumbers += num;

            }           

        }

        Console.WriteLine("1. Numbers filtering. Use the variable 'removeNumbers' containing the numbers to be removed from variable 'numbers'.");

        Console.Write("Filtered Numbers: ");    

        foreach(var num in filteredNumbers)

        {

            Console.Write(num + " ");

        }

        string sum = string.Format("{0:0.00}", sumFilNumbers);

        Console.WriteLine("\n\n2. After filtering the numbers, show the sum of filtered numbers with 2 decimal places.");

        Console.Write("Sum of Filtered Numbers: " + sum);

    }

}