The erroneous reading from the UPC symbol is given by $$07 \mathrm { e } 310000421$$ , where e is the erroneous digit value.The value of e is _____.

Name: The erroneous reading from the UPC symbol is given by \[07 \mathrm { e } 310000421\] , where e is the erroneous digit value.The value of e is _____.
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The Answer is

ext { CSD formula must produce 1. CSD } = [ 210 - 3 ( 0 + e + 1 + 0 + 0 + 2 ) - ( 7 + 3 + 0 + 0 + 4 ) ] _ { \bmod ( 10 ) } = [ 210 -

3 ( \mathrm { e } + 3 ) - 14 ) ] _ { \bmod ( 10 ) } = [ 210 - 23 - 3 \mathrm { e } ] _ { \bmod ( 10 ) } = [ 187 - 3 \mathrm { e } ] _ { \bmod ( 10 ) } = 1 ightarrow \mathrm { e } = 2

The Erroneous Reading from the UPC Symbol Is Given By 07