A 4-digit password is a number that begins with a 3 and does not contain a zero or nine. If digits can be repeated, how many pos

Question

7nadin3 [17]

2 years ago

5

A 4-digit password is a number that begins with a 3 and does not contain a zero or nine. If digits can be repeated, how many pos

sible passwords are there? A) 1,536. B) 512. C) 343

Mathematics

2 answers:

Maru [420] · Answer 1 · 2022-09-05T00:23:46+03:00

Maru [420]2 years ago

7 0

Well , we now the password would be :

3 _ _ _

and if there is no 0 and 9, the combination must be between 1 to 8

So the possibility of password would be :

8 x 8 x 8 = 512 possibilities

The answer is option B.

Hope this helps

Yuliya22 [10] · Answer 2 · 2022-09-05T01:52:55+03:00

Yuliya22 [10]2 years ago

6 0

Answer:

512

Step-by-step explanation:

8*8*8=512

hope that helps