static void Main(string[] args)
Random numGen = new Random();
int a = numGen.Next(1, 11);
int b = numGen.Next(1, 11);
Console.WriteLine($"what is {a} * {b}?");
int product = Convert.ToInt32(Console.ReadLine());
Console.WriteLine("correct");
int responseIndex = numGen.Next(1, 4);
Console.WriteLine("wow you really got that question wrong?");
Console.WriteLine("<Press space to continue>");
Console.WriteLine("are you even trying?");
Console.WriteLine("<Press space to continue>");
Console.WriteLine("you should really study your times tables...");
Console.WriteLine("<Press space to continue>");