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UPC Assignment 1 Sample problems

UPC Assignment 1 Sample problems. Consider the following UPC-A code. Is it a valid UPC? 0 11110 86852-7 . Consider the following UPC-A code. Is it a valid UPC? 0 11110 86852-7 The answer is Yes. How can we get ?. odd-digit sum: 0+1+1+8+8+2=20 even-digit sum: 1+1+0+6+5=13

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UPC Assignment 1 Sample problems

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  1. UPC Assignment 1 Sample problems

  2. Consider the following UPC-A code. Is it a valid UPC? 0 11110 86852-7

  3. Consider the following UPC-A code. Is it a valid UPC? 0 11110 86852-7 The answer is Yes

  4. How can we get ? • odd-digit sum: 0+1+1+8+8+2=20 • even-digit sum: 1+1+0+6+5=13 • odd*3+even = 20*3+13=73 • mod 10: 73 mod 10 = 3 • subtract from 10=10-3=7

  5. Consider the following UPC-A code. What is the missing digit (shown as a question mark)? 0 21130 27566-?

  6. Consider the following UPC-A code. What is the missing digit (shown as a question mark)? 0 21130 27566-? • The answer is 3

  7. How can we get ? • odd-digit sum: 0+1+3+2+5+6=17 • even-digit sum: 2+1+0+7+6=16 • odd*3+even = 17*3+16=67 • mod 10: 67 mod 10 = 7 • subtract from10=10-7=3

  8. Consider the following UPC-A code. What is the missing digit (shown as a question mark)?0 70?30 50606 0

  9. Consider the following UPC-A code. What is the missing digit (shown as a question mark)?0 70?30 50606 0 • The answer is 3

  10. How can we get ? • odd-digit sum: 0+0+3+5+6+6=20 • even-digit sum: 7+x+0+0+0=7+x • odd*3+even = 20*3+7+x=67+x • mod 10: (67+x)mod 10 • checking number is 0, so (67+x)mod10=0 =>x=3

  11. Consider the following UPC-A code. What is the missing digit (shown as a question mark)?0 787?7 50758 6

  12. Consider the following UPC-A code. What is the missing digit (shown as a question mark)?0 787?7 50758 6 • The answer is 8

  13. How can we get ? • odd-digit sum: 0+8+x+5+7+8=28+x • even-digit sum: 7+7+7+0+5=26 • odd*3+even = (28+x)*3+26=110+3x • subtract from 10: 10-(110+3x)mod10=6 =>(110+3x)mod10=4 =>x=8

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