Probability and statistics

Question

How many different ID cards can be made if there are five digits on a card and no digit can be used more than once? What if digits can be repeated?

Part 1 of 2

There are different ID cards that can be made if no digit can be used more than once

Part 2 of 2

There are different ID cards that can be made if digits can be repeated.

Answer 1

How many different ID cards can be made if there are five digits on a card and no digit can be used more than once? What if digits can be repeated?

Part 1 of 2

There are different ID cards that can be made if no digit can be used more than once.

Answer: 5! =FACT(5) = 5 x 4 x 3 x 2 x 1 = 120

Part 2 of 2

There are different ID cards that can be made if digits can be repeated.

Answer: 5 to the power 5 =POWER(5,5) = 5 x 5 x 5 x 5 x 5 = 3125