AMDM- Universal Product Codes and Credit Card Numbers

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AMDM- Universal Product Codes and Credit Card Numbers

1. What does the check digit need to be so that the following UPC will be valid?

48900003782-D

Be sure to explain your answer.

2. Is the following UPC code valid?

08500001818-7

Be sure to explain your answer.

3. Is the following UPC code valid?

00498847303-7

Be sure to explain your answer.

4. Is the following UPC code valid

07385200131-1

Be sure to explain your answer.

5. Is the following UPC code valid?

08200019298-5

Be sure to explain your answer.

6. What does the check digit need to be so that the following UPC will be valid?

38748473674-D

Be sure to explain your answer.

7. What does the check digit need to be so that the following UPC will be valid?

27000892873-D

Be sure to explain your answer.

8. Show that 4128 0012 4389 0110 is an invalid VISA credit card number.

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