Subtract 10 pts if you actually implement anything like this in real life code:

using System;
using System.Linq;
 
namespace FizzBuzzInOneLine
{
    internal class Program
    {
        private static void Main(string[] args)
        {
            Console.Write( String.Join("\n",
                Enumerable.Range(1, 100)
                    .Select(x => (x%3 == 0) 
                        ? (x%5 == 0)
                            ? "FizzBuzz"
                            : "Fizz"
                        : (x%5 == 0)
                            ? "Buzz"
                            : x.ToString())));
          }
     }
}

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