change column number in A1 reference based on formula.

I want to refer to the row number of a column based on a formula.  Is there a way to refer to a cell where the row number changes using a formula, even though I'm using the A1 style of referencing?  Or would I have to change to R1C1 style?  

For instance, within a formula, I need to refer to a cell in column F, but the cell I need to refer to changes based on a counta() fn.  For instance, the formula might be something like =SUM(Fx:F25) where x= counta(C1:C10).  

I'm just blanking out on this, and I'm sure the answer is probably simple.  Thanks for your help.
witzph1Asked:
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

barry houdiniCommented:
You can use INDEX function, e,g,

=SUM(INDEX(F:F,COUNTA(C1:C10)):F25)

regards, barry
0

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
witzph1Author Commented:
Perfect.  I had used the INDEX "array form", but not the "reference form."  I had forgotten about the reference form.  Thanks for the help.
0
witzph1Author Commented:
Thanks so much.
0
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Microsoft Excel

From novice to tech pro — start learning today.

Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.