##### ###### ##### ### # # ### # # ###### ## ## ## ## ## ## ## # # # # # ## ##### #### ##### # # # # # # # #### ## # ## ## ## ## # # # # # ## ## # ###### ## ### # ### # ######
##### ###### ##### ### # # ### # # ###### ## ## ## ## ## ## ## # # # # # ## ##### #### ##### # # # # # # # #### ## # ## ## ## ## # # # # # ## ## # ###### ## ### # ### # ######
(Counting possibilities)
How many 8-character passwords can you make with lowercase letters only? 26^8 ≈ 208 billion.
Add uppercase: 52^8 ≈ 53 trillion. Add digits: 62^8 ≈ 218 trillion.
This is permutations with repetition. More choices per position exponentially increase security.
