Unable to understand the code

Question

I am doing some basic C# exercises to learn C# which provided the solution to the problems too however, I am unable to understand the code.

 

Problem:

Write a C# program to check if an integer is within 20 of 100 or 200.

Sample Output:

Input an integer

25

False

 

Solution:

public class Exercise22

{

   static void Main(string[] args)

   {

   Console.WriteLine("\nInput an integer:");

   int x = Convert.ToInt32(Console.ReadLine());

   Console.WriteLine(result(x));

   }

   public static bool result(int n) { 

   if (Math.Abs(n - 100) <= 10 || Math.Abs(n - 200) <= 10)

      return true;

   return false;

}

}

 Can't understand the code below:

   if (Math.Abs(n - 100) <= 10 || Math.Abs(n - 200) <= 10)

      return true;

   return false;

 

I am a beginner in c# but not in overall programming