# math

posted by
**Kory** on
.

Find the # of possible choices for a 2 digit password that is greater than 19. Then find the # of possible choices for a 4 digit PIN # if the digits can not be repeated. HELP!

posted by
**Kory** on
.

Find the # of possible choices for a 2 digit password that is greater than 19. Then find the # of possible choices for a 4 digit PIN # if the digits can not be repeated. HELP!