Question

How many possible three-digit passwords can be formed using digits 0 through 9 if no digits are repeated?

Answer 1

10 * 9* 8 = 720

Answer 2

10P3

Answer 3

720

Answer 4

720

Answer 5

can anybody explain it im confused abt this

Answer 6

10 to choose form at first
9 left since ones used
8 left since 2 are used

10.9.8 = 720

Answer 7

if repetition is allowed it goes:

10 to choose from
10 to choose from
10 to choose from :)

10.10.10 = 1000 right?

Answer 8

Yea. :)

Answer 9

why r u multiplyin 10.9.8