Hello Hans

The formula you need for this is countif. Where you require the answer, type
=countif(
to select all of your 50 sheets, hold down shift as you select the first and
last tab, so the formula will read =countif('Sheet1:Sheet50'
then select the range c6:f40
=countif('Sheet1:Sheet50'!c6:f40
the last bit says what you're counting, so "jack". Because this is text,
not a number you need to enclose it in quotes, so your entire formula should
read

=countif('Sheet1:Sheet50'!c6:f40;"jack")

don't forget the ; between the range and what you're looking for

hope this helps

Liz

"hans" wrote:

I want to know how often a name (say jack) occurs in a spreadsheet.
The name has to be found in the range c6:f40 but.........
i have 50 sheets. named 1, 2, 3, 4, .......50
and i want to know the sum of how often a name occurs in all sheets
together.

Can someone help me?
Greetings Hans