Simple way to use func

using System;
using System.Linq;

namespace MathOperations
{
    class Program
    {
        static void Main(string[] args)
        {
            Func<int, double> getValue = x => Math.Log(x % 10 - 2);

            var numbers = Enumerable.Range(0, 100).Where(x => getValue(x) >= 1 && getValue(x) <= 2);
            Console.WriteLine(string.Join(" ", numbers));
        }
    }
}