public static void Main()
{Console.WriteLine("ACTIVITY 1");
Console.WriteLine(" Enter a Number ");
num1 = Convert.ToInt32(Console.ReadLine());
Console.WriteLine("Enter a 2nd Number ");
num2 = Convert.ToInt32(Console.ReadLine());
Console.WriteLine("Even numbers between "+num1 + " and " +num2 + " are : ");
Console.WriteLine("ACTIVITY 2 ");
Console.Write("Input number of rows : ");
rows = Convert.ToInt32(Console.ReadLine());
for (int i = 1; i <= rows; i++)
for (int j = 1; j <= i; j++)
Console.WriteLine("ACTIVITY 3");
Console.Write("Input number of rows : ");
row = Convert.ToInt32(Console.ReadLine());
for (int i = 1; i <= row; i++)
for (int j = 1; j <= i; j++)