+0

# Stumped.

0
322
6

Determine the correct check digit for the UPC. 7-14043-03885-?

Mar 16, 2019

#1
+111438
+1

71404303885

Don't know much about this, but here is the algorithm

Add the digits in the odd-numbered positions (first, third, fifth, etc.) together and multiply the total by three:
(7 + 4 + 4 + 0 + 8 + 5) X 3  =   (28) x 3 =  ( 84)

Add the digits in the even-numbered positions (second, fourth, sixth, etc.).
(1 + 0 + 3 + 3 + 8)  =  (15)

Add the two results together:
84 + 15  =  99

Now what single digit number makes the total a multiple of 10? That’s the check digit.
99 +  1

1 is the check digit. The full UPC number is now   714043038851

Mar 16, 2019
edited by CPhill  Mar 16, 2019
#2
+110153
+1

What is this question about Chris?

Mar 16, 2019
#3
+111438
+1

It's concerning the UPC (Universal Product Code) label found on most items in a grocery store....(also known as a "bar code" )........the bar code  is scanned at the register for the price...I think the "check digit" is used to detect fraud....

I'm sure that Australia probably uses some form of this

CPhill  Mar 16, 2019
#4
+110153
+1

Thanks Chris :)

Melody  Mar 16, 2019
#5
+1914
+2

CPhill,

You may appreciate the first “Mad Magazine” with a UPC.

Despite Mad’s hope of jamming every computer, in 1978 it’s unlikely that even one retail sale was preceded by a scan of this UPC.

GA

Mar 17, 2019
#6
+110153
+1

WOW, I did not think bar codes whould ahve been thought of back then!

Thanks for enlightening us Ginger. :)

Melody  Mar 17, 2019