Question: How many different ID cards can be made if there are nine digits on a card and no digit can be used more than once?

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

Step by Step Solution

There are 3 Steps involved in it

1 Expert Approved Answer
Step: 1 Unlock blur-text-image
Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock
Step: 3 Unlock

Students Have Also Explored These Related Mathematics Questions!