Dear all,

I wish to use a SUMIF(range, criteria, sum range) forumula utlising OR for
the criteria, e.g.

=SUMIF(A1:J1,OR(A10:A20),B2:J2)

It would appear however that this does not work. Can you please point out
the error of my ways, thank-you.


Yours in appreciation (as always),

Neil