Dear Sir,
I want to calculate formula which refers 3 cells out of 4 cells. for eample
a1=5, a2=2, a3=9, a4=16. i can able enter all the 4 cells, if i enter the
values in cells a1,a2 & a3 the result should come in a4, if i enter the
values in cells a2, a3 & a4 the result should come in a1, like all the 4
cells. |Is it possible in excel?

Thanks,
Arul