using System;

using System.Linq;

​

public class Program

{

    public static void Main()

    {

        Table[] table =

        {

            new Table { Name = "A" },

            new Table { Name = "A" },

            new Table { Name = "A" },

            new Table { Name = "B" },

            new Table { Name = "B" },

            new Table { Name = "C" },

            new Table { Name = "C" },

            new Table { Name = "D" },

        };

​

        var nameGroups = table.GroupBy(x => x.Name);

        var resultCountList = nameGroups

            .Select(g => (

                count: g.Count(), 

                numberOfTimes: nameGroups.Count(ng => g.Count() == ng.Count())))

            .Distinct()

            .ToList();

        resultCountList.ForEach(Output);

        void Output((int, int) pair) => Console.WriteLine(pair);

    }

    public class ContainerControl{}

}

​

public class Table

{

    public string Name { get; set; }

    public string Value { get; set; }

}

​

​