public class Article
{
    public int Id { set; get; }

    public string Title { set; get; }

    public string Content { set; get; }

    public int AuthorId { set; get; }
}

List<Article> articles = new()
{
    new Article { Id = 1, Title = "Best title one", Content = "Amazing content", AuthorId = 1 },
    new Article { Id = 2, Title = "Another title", Content = "More amazing content", AuthorId = 1 },
    new Article { Id = 3, Title = "Unicorns", Content = "Even more amazing content", AuthorId = 1 },
    new Article { Id = 4, Title = "Best title one", Content = "Amazing content", AuthorId = 1 },
    new Article { Id = 5, Title = "Another title", Content = "More amazing content", AuthorId = 1 },
    new Article { Id = 6, Title = "Unicorns", Content = "Even more amazing content", AuthorId = 1 },
    new Article { Id = 7, Title = "Best title one", Content = "Amazing content", AuthorId = 1 },
    new Article { Id = 8, Title = "Another title", Content = "More amazing content", AuthorId = 1 },
    new Article { Id = 9, Title = "Unicorns", Content = "Even more amazing content", AuthorId = 1 },
    new Article { Id = 10, Title = "Best title one", Content = "Amazing content", AuthorId = 1 },
    new Article { Id = 11, Title = "Another title", Content = "More amazing content", AuthorId = 1 },
    new Article { Id = 12, Title = "Unicorns", Content = "Even more amazing content", AuthorId = 1 },
};

var pageNumber = 1;
var itemsPerPage = 5;
IEnumerable<Article> pageArticles = articles.Skip((pageNumber - 1) * itemsPerPage).Take(itemsPerPage);
Console.WriteLine($"Articles of page: {pageNumber}");
foreach (var article in pageArticles)
{
    Console.WriteLine($" Id: {article.Id}, Title:{article.Title}, Content:{article.Content}, AuthorId:{article.AuthorId}");
}

pageNumber = 1;
itemsPerPage = 5;
IEnumerable<Article[]> allPagesArticles = articles.Chunk(itemsPerPage);
Console.WriteLine($"Articles of page: {pageNumber}");
foreach (var article in allPagesArticles.ElementAt(pageNumber - 1))
{
    Console.WriteLine($" Id: {article.Id}, Title:{article.Title}, Content:{article.Content}, AuthorId:{article.AuthorId}");
}