zad 1

  int n = 49;
                        Random rand = new Random();
                        int[] tab = new int[n];

                        for (int i = 0; i < 49; i++)
                            tab[i] = i + 1;


                        for (int i = 0; i < 6; i++)
                        {
                            int r = rand.Next(n);
                            Console.WriteLine(tab[r]);
                            tab[r] = tab[n - 1];
                            n--;
                        }