You could also try these two:

=SUM(NPV({0,-2},D23:K23))/2
=SUM(NPV({0,-2},,D23:K23))/2

"John Blackwell" wrote:

Folks,

I'm trying to find a formula for summing the contents of alternate cells in
a row?

I have a large workbook and want to calculate the contents of row 23 - i.e.
E23, G23, I23, K23, M23 etc etc, up to KK23. Is there a simple formula for
this?

John Blackwell