AMDM- Universal Product Codes and Credit Card Numbers
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
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3. Is the following UPC code valid?
00498847303-7
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4. Is the following UPC code valid
07385200131-1
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5. Is the following UPC code valid?
08200019298-5
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6. What does the check digit need to be so that the following UPC will be valid?
38748473674-D
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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.