Can someone please explain the basics of jagged arrays? i know i have to multiple the rows by the columns

namespace Treehouse.CodeChallenges
{
    public static class MathHelpers
    {
        public static int[][] BuildMultiplicationTable(int maxFactor)
        {
            int[][] table = new int[maxFactor + 1][];
            for(int row = 0; row < table.Length; row++)
            {
                //here we are creating the actual rows of the array that have "maxFactor" + 1 columns
                table[row] = new int[maxFactor + 1]; 
                for(int col = 0; col < table[row].Length; col++)
                {
                    table[row][col] = row * col; // This is where we actually are giving the values to the array
                }
                System.Console.WriteLine(); //This creates a new line between every row in the array so everything isn't on one line
            }
            return table;
        }
    }
}