C# 7.1 New Features - https://codingblast.com/csharp-7-1-new-features/

CSharp71.cs

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

namespace CSharp71Features
{
	class Program
	{
		static void Main(string[] args)
		{
			var numbers = new List<int> { 33, 15, 14 };

			var (lowest, highest) = GetSomeTuple(numbers);
		}
		
		private static (int lowest, int highest) GetSomeTuple(List<int> numbers)
		{
			int lowest = numbers.Min(n => n);
			int highest = numbers.Max(n => n);

			return (lowest, highest);
		}
	}
}