using System;

using System.Collections.Generic;

using System.Linq;

public class Student

{

    public Student(string fName, string lName, List<double> marks)

    {

        this.FirstName = fName;

        this.LastName = lName;

        this.Marks = marks;

    }

    public string FirstName {get;set;}

    public string LastName {get;set;}

    public List<double> Marks {get;set;}

}

​

public class CategorizeNumbers

{

    public static void Main()

    {

        var students = new List<Student>

        {

            new Student("Richard1", "Edwards1",new List<double> {5, 2, 5, 4}),

            new Student("Richard2", "Edwards2",new List<double> {5, 2, 5, 4}),

            new Student("Richard3", "Edwards3",new List<double> {5, 6, 5, 4}),

            new Student("Richard4", "Edwards4",new List<double> {5, 2, 5, 4}),

            new Student("Richard5", "Edwards5",new List<double> {5, 2, 6, 4}),

        };

        var excellentStudents = students

            .Select(s => new { FullName = s.FirstName + " " + s.LastName, Marks = s.Marks })

            .Where(s => s.Marks.IndexOf(6) >= 0);

         foreach (var student in excellentStudents)

        {

            Console.WriteLine("Name:{0} Marks:{1}",student.FullName,string.Join(", ", student.Marks));

        }

    }

}