How do you identify which rows to sum?

"Vlado Sveda" wrote:

Let imagine this situation:
I have column with set of ranges and I need to sumarise every particular
range.

for example:

D4: 9
D5: 5
D6: 3
D7: =SUM(D4:D6)
D8:
D9: 1
D10: 2
D11: 3
D12: =SUM(D9:D11)
D13:
D14: 1
D15: 1
D16: 1
D17: 1
D18: 1
D19: 1
D20: 1
D21: =SUM(D14:D20)
etc ....



My Idea is have in every "Sum cell" the same formula. Every single range can
vary in mumber of rows.
In VBA I can use .CurrentRegion.Rows.Count. Is something similar possible in
sheet formulas ?

Thanks in advance to all !
Vlado