Mark bought a new padlock for his house's main door that can be unlocked by a 3-digit code. The next day, when he gets home, he has difficulty unlocking the padlock because he forgot the code. If the code consists of any digits, how many possible combinations of numbers must he try to open the door?
Answers & Comments
Answer:
Man I feel like Cleopatra
Joan of Arc, Queen of hearts yeaaah~
tonight it's only me that matters~