thank you.. think if post too much not get help.. tough question, but found
some examples "if" related. I used what would be correct column letters.

=SUM(--(MOD(COLUMN($FE9:$FX9),2)MOD(COLUMN($FE9),2)),$FE 9:$FX9)

=SUMPRODUCT(--(MOD(COLUMN($FE9:$FX9),2)=MOD(COLUMN($FX9),2)),$FE 9:$AJ9,$FF9:$FW9)


My formula I am trying to make i think is what (will throw off?),
but 2nd portion of formula have figured out, 1st portion X: trying to grab
data from 'LO' / hi columns that are stored in a different section of
columns, follows:

=IF(E9=0,"",IF($C$2<2,$EC9/$EF9%-100,
X (everyother col by $C$2: FE FG FI FK..) /OFFSET(EF9,0,$C$2-1)%-100)




"Mike H" wrote:

Hi,

I think you need to post some sample data and a description of what your
trying to do.

Mike

"Nastech" wrote:

hi, not sure if need use of MOD, or INDEX / OFFSET..
I have 10 double columns of data, but only need the 1st col to figure into a
portion of a formula. (specifically, FE - FX), have a fixed cell where
designating number of columns to offset: $C$2

not sure how to apply, but think MOD is needed?
thanks