Jasper finally managed to save enough money to open a savings account at the credit union. When he went in to open the account, the accounts manager told him that he
needed to select a four-digit PIN (personal identification number). She also said that
he could not repeat a digit, but that he could use any of the digits 0,1,2,3,4,5,6,7,8, 9 for any
place in his four-digit PIN.