911 is not allowed!
Source: 2016 AMC 8 # 17
November 23, 2016
AMC 82016 AMC 8
Problem Statement
An ATM password at Fred's Bank is composed of four digits from to , with repeated digits allowable. If no password may begin with the sequence then how many passwords are possible?(A)\mbox{ }30\qquad(B)\mbox{ }7290\qquad(C)\mbox{ }9000\qquad(D)\mbox{ }9990\qquad(E)\mbox{ }9999