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sum every nth cell in a row
Sorry Posted in wrong group earlier
Hi I am trying to adapt Bob Phillips formula =SUMPRODUCT((B2:B32)*(MOD(ROW(B2:B32)-ROW(B2),n)+1=m)) I have cells, e5,e6,e7,e8,e9,e10,e11,e12,e13,e14,e15, etc I want to sum, e5,e9,e13 etc I will need to adapt this in another cell to add, e6,e10,e14 etc and therefore need to understand the N + M value I have entered the formula below in cell c5, but get 0. Have entered as array formula {=SUMPRODUCT((E5:AY5)*(MOD(ROW(E5:AY5)-ROW(B2),4)+1=F5))} What am I doing wrong Help appriciated Brian -- Message posted via OfficeKB.com http://www.officekb.com/Uwe/Forums.a...excel/200803/1 |
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