Asked by :3

Vinay made a Password that consists of 3 digits. None of the digits are the same. How many possible passwords did Vinay choose from? Please explain how to solve.
Answered by M, S, E,
There are 9 possible numbers for the first number. There are 8 possible numbers for the second number since one number has been picked. For the third number there are 7 possible numbers.

9*8*7=504
Answered by :3
Thx, I just realized how to solve it, but I think the first number has to be 10 then 9 and then 8 if it was including zero, which equals 720. And this question was multiple choice so i was confused to why 504 was not there. But thanks again for helping me understand :)
Answered by M, S, E,
Yes, you are right. I was thinking 1-9. I forgot about 0.
Answered by random stranger
thx so much!
Answered by He
So how do i do the math?
Answered by He
oh wait nvm
Answered by balls
You would do 10*9*8 for the answer of 720
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