Dear all,
I have that formula on excell to calculate the MOD 10 value for a DIGIT CHECK.
BELOW THE FORMULA.
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=10-MOD(SUMPRODUCT(--MID(A1,{1,3,5,7,9,11,13,15,17},1))+<o:p></o:p>
SUMPRODUCT(--MID(A1,{2,4,6,8,10,12,14,16,18},1)*3),10)
It works for a number but it is not working...