Write an M-file to calculate the factorial function n!, as defined in Example 5.2. Be sure to handle the special case of 0!. Also, be sure to report an error if n is negative or not an integer

Mastercard managers are motivated to increase (1) the number of individuals who have and use a mastercard credit card, (2) the number of banks and other clents who issue mastercards to customers and/or employees, and (3) the number of locations that accept mastercard payments. discuss how mastercard could use its data warehouse to it expand each of these customer bases.