using System;

using System.Linq;          

public class Program

{

    public static void Main()

    {

        var scores = new[] { 87, 56, 33, 20, 11, 100 };

​

        var newScores = scores.TakeWhile(i => i > 50); // take each element until condition is not met

        foreach (var newScore in newScores)

        {

            Console.WriteLine(newScore);

        }

    }

}