=OR(C1=C2,C1=C3)

or to exclude evaluation when C1 empty:

=IF(ISBLANK(C1),OR(C1=C2,C1=C3),"")

asf - ExcelForums.com wrote:
I am trying to make a spreadsheet with a cell that says if the value
in C1 = the value in c2 or the value in c3, then the cell returns a
"true"

So we start with:

=IF(c1=c2, "TRUE")

but I have no idea how to add "OR IF C1=C3" to the whole bit.

help! :D