count

=COUNT(Sheet2:Sheet90!A1)

sum

=SUM(Sheet2:Sheet90!A1)


Regards,

Peo Sjoblom

"Seti" wrote:

I am creating a massive workbook with roughly 90 worksheets. I need a
formula to count all the numbers in one cell for all 90 sheets and total it
in one cell. Any ideas, I'm fairly new at this.