ms_learn_csharp/013_eval_boolean_expressions/challenge_excercise/Program.cs

int num = new Random().Next(1,11);
Console.WriteLine($"{(num%2==0 ? "heads" : "tails")}");

Console.WriteLine("------");

Random coin = new Random();
Console.WriteLine((coin.Next(0, 2) == 0) ? "heads" : "tails");