summing a volitile number of cells

[Guest]

I've got a row of numbers A2:K2. I want a formula that will sum from A2 to
the number of cells I enter in A1.

So if I enter "3" in cell A1, the formula will sum from A2 to C2.
and if I enter "5" in cell A1, it will sum from A2 to E2.

I've been fiddling around in R1C1 but not getting it to work...

 

[Chip Pearson]

Try

=SUM(OFFSET(B2,0,1,1,A2))


--
Cordially,
Chip Pearson
Microsoft MVP - Excel
Pearson Software Consulting, LLC
www.cpearson.com

 

[Trevor Shuttleworth]

=SUM(OFFSET(A2,,,,A1))

Regards

Trevor

 

[Guest]

One way

=SUM(A2:INDEX(A2:K2,A1))

it's non volatile as opposed to OFFSET and INDIRECT

Regards,

Peo Sjoblom

 

[Guest]

Thanks Chip, I was cruising your web site when you for answers when you
responded in person.
THX

 

[Bob Phillips]

A non-volatile alternative for you

=SUM(A2:INDEX(2:2,A1))

--

HTH

Bob Phillips

(remove nothere from the email address if mailing direct)