How can I do a countif in non-consecutive cells over a series of rows,
like evens and odds?. I tried this:
=COUNTIF($C$1:$Z$1:$C$3:$Z$3:$C$5:$Z$5:$C$7:$Z$7:$ C$9:$Z$9:$C$11:$Z$11:$C$13:$Z$13,"1")
but it counts everything on the even rows as well.

Thanks to all.