C# Math Class

using System;

namespace MyApplication
{
  class Program
  {
    static void Main(string[] args)
    {
      // Min number of 5 and 10 is 5
      int minNumber = Math.Min(5, 10);
      
      // Max number of 5 and 10 is 10
      int maxNumber = Math.Max(5, 10);
      
      // Sqrt number of 81 is 9
      double sqrtNumber = Math.Sqrt(81);
      
      // Abs number of -9.8 is 9.8
      double abs = Math.Abs(-9.8);
      
      // Round number of 0.99 is 1
      double roundNumber = Math.Round(0.99);
      
      Console.WriteLine(minNumber);  
      Console.WriteLine(maxNumber);  
      Console.WriteLine(sqrtNumber);  
      Console.WriteLine(abs);  
      Console.WriteLine(roundNumber);  
     }
  }
}