A number lock has five digits (0-9). In the code, numbers cannot be repeated. How many different codes are available?

Question

asked Aug 26, 2024 146k views

1 Answer

Kragan · Answer 1 · 2024-09-01T06:23:35+0000

Answer:

Explanation:

The first digit can be any of 10 choices.

The second can be any of 9 choices (since no repetition).

The third digit can be any of 8 choices.

The fourth digit can be any of 7 choices.

The fifth digit can be any of 6 choices.

$\text{Possible codes}=10*9*8*7*6=30240$