how many 3-letter passwords can be created with letters of word 'WHENCE'?
- 96
- 78
- 60
- 72
are options to answer
Asked
Active
Viewed 47 times
-1
-
It is 72 but you should make an attempt to figure out yourself why. – H. H. Rugh Sep 11 '16 at 19:00
1 Answers
-1
Hint:
Every letter place has 6 options. because same letter can repeat itself.
Ilan Aizelman WS
- 4,128