LINQ

var racers = from r in Formula1.GetChampions()
                where r.Wins > 15 && (r.Country == "Brazil" || r.Country == "Austria")
                select r;

var racers = Formula1.GetChampions()
    .Where(r => r.Wins > 15 && (r.Country == "Brazil" || r.Country == "Austria"))
    .Select(r => r);

var racers = Formula1.GetChampions().
        Where((r, index) => r.LastName.StartsWith("A") && index % 2 != 0);

var ferrariDrivers = from r in Formula1.GetChampions()
                        from c in r.Cars
                        where c == "Ferrari"
                        orderby r.LastName
                        select r.FirstName + " " + r.LastName;

var ferrariDrivers = Formula1.GetChampions()
    .SelectMany(r => r.Cars, (r, c) => new { Racer = r, Car = c })
    .Where(r => r.Car == "Ferrari")
    .OrderBy(r => r.Racer.LastName)
    .Select(r => r.Racer.FirstName + " " + r.Racer.LastName);

var racers = (from r in Formula1.GetChampions()
                orderby r.Country, r.LastName, r.FirstName
                select r).Take(10);

var racers = Formula1.GetChampions()
    .OrderBy(r => r.Country)
    .ThenBy(r => r.LastName)
    .ThenBy(r => r.FirstName)
    .Take(10);

var countries = from r in Formula1.GetChampions()
                group r by r.Country into g
                orderby g.Count() descending, g.Key
                where g.Count() >= 2
                select new
                {
                    Country = g.Key,
                    Count = g.Count()
                };

var countries = Formula1.GetChampions()
    .GroupBy(r => r.Country)
    .OrderByDescending(g => g.Count())
    .ThenBy(g => g.Key)
    .Where(g => g.Count() >= 2)
    .Select(g => new { Country = g.Key, Count = g.Count() });

var countries = from r in Formula1.GetChampions()
                group r by r.Country into g
                orderby g.Count() descending, g.Key
                where g.Count() >= 2
                select new
                {
                    Country = g.Key,
                    Count = g.Count(),
                    Racers = from r1 in g
                                orderby r1.LastName
                                select r1.FirstName + " " + r1.LastName
                };

var racers = from r in Formula1.GetChampions()
                from y in r.Years
                where y > 2003
                select new
                {
                    Year = y,
                    Name = r.FirstName + " " + r.LastName
                };

var teams = from t in
                Formula1.GetContructorChampions()
            from y in t.Years
            where y > 2003
            select new
            {
                Year = y,
                Name = t.Name
            };

var racersAndTeams =
        from r in racers
        join t in teams on r.Year equals t.Year
        select new
        {
            Year = r.Year,
            Racer = r.Name,
            Team = t.Name
        };

var countries = (from c in
                        from r in Formula1.GetChampions()
                        group r by r.Country into c
                        select new
                        {
                            Country = c.Key,
                            Wins = (from r1 in c
                                    select r1.Wins).Sum()
                        }
                    orderby c.Wins descending, c.Country
                    select c).Take(5);