Geoff needs to create a password for his E-mail account. The password must have three letters. How many different passwords can he make?
Assume he may not use each letter more than once.
Assume he may not use each letter more than once.
1 Answer
Apr 18, 2016
Explanation:
Considering repetition of letters are allowed
so that AAA, BBB, CCC and so forth and so on...
also
AAB, AAC, AAD, and so forth and so on...
are all allowed then
26 * 26 * 26 =17576 passwords
God bless....I hope the explanation is useful