One way:

=INDEX(A1:AE1,MATCH(TRUE,A2:AE2="x",0))

This is an array formula. Hit ctrl-shift-enter instead of enter. If you do it
correctly, excel will wrap curly brackets {} around your formula. (don't type
them yourself.)

Another way:

=MIN(IF(A2:AE2="x",COLUMN(A2:AE2)))
(still an array formula)

martialtiger wrote:

MS Excel 2003

Let's say I have row 1 containing values 1-31 (so the value in A1 is 1,
B1 is 2, etc all the way until 31). Now in row 2 is where I would put
an "X" in any of the columns that contain a number from 1-31. How can
I create a formula that will give me the value (1-31) from row 1
depending on where I place X in row 2?

TIA

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Dave Peterson