1. for random numbers

static Random _r = new Random();
static int F()
{
int n = _r.Next(0,36);
return n;
}

1a) - if you want to make bingo card

static void Main()
{
//if you want card with 6 numbers

        int\[\] numbers = new int\[6\];


    //to put different numbers at each place on the array


        for (int i = 0; i < numbers.Length; i++)
        {
            int a = F();
            bool has = numbers.Contains(a);
            if (has == true) {i--; }
            else {
                numbers\[i\]=a;
            }
        }


    //to sort it and print it

        Array.Sort(numbers);

        int j = 0;
        foreach (int i in numbers)
        {
            Console.WriteLine("number at place " + (j+1).ToString() +" is " +i.ToString());
            j++;
        }
        Console.ReadLine();


}

        static Random \_r = new Random();
        static int F()
        {
            int n = \_r.Next(0,36);
            return n;
        }

for horses and chances of winning

static void Main(string[] args)
{
int a = F();

//if random number wich is between 1 and 100 is smaler or equal 80 than horse win
if (a <= 80)
{
    Console.Write("horse win!");
}
//else horse lose
else { Console.Write("horse lose!"); }
//and to check what is current value of number a - wich is number between 1 and 100
Console.Write(" value of a is " + a.ToString());
Console.ReadLine();

}
static Random _r = new Random();
static int F()
{
int n = _r.Next(1, 100);
return n;
}