Question

Jimmy needs to make a 3-digit password for his log on name for a website. The password can contain any digit from 0-9, but the digits cannot repeat. How many possible passwords are there? 0/1 820 520 920 720

Correct answer 720

Answer 1

Answer:

The total number of possible passwords is 720.

Step-by-step explanation:

Jimmy has 10 digits (0-9) to make the password and repetition is not allowed.

So, we have to digits in three places.

For the first place, we can use all the 10 digits (0-9).

For the second place, we can only use 9 digits as the repetition is not allowed and we have already used one digit in first place.

Similarly, for the third place, we can only use 8 digits.

Now, using the fundamental principle of counting, the total number of possible ways to create the password will be,

$n=10\times9\times8\\n=720$

Therefore, the total number of possible passwords is 720.

For more details, refer the link:

https://brainly.com/question/1216161?referrer=searchResults