Not very sure, but maybe you want something like this:

Assume this is in cols A and B, data from row2 down

Power Qty
+0.25 20
+0.50 30
+0.75 40
etc

Put in C2: =IF(D2="","",COUNTIF($D$2:D2,"x"))
Put in D2: =IF(B2="","",IF(B2<=10,"x",""))
Select C2:D2, copy down as far as required

Col C will return the required sequential numbering

Is the above what you're after ?
--
Rgds
Max
xl 97
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Singapore, GMT+8
xdemechanik
http://savefile.com/projects/236895
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"Pushpendra" wrote in message
...
I have a data like following

Power Qty
+0.25 20
+0.50 30
+0.75 40
+1.00 10
+1.25 15
+1.50 17

I want to insert data for each power not exceeding the total quantity of
10
and for each group of 10 quantities; I want to give a number like 1,2,3,4
etc.

Like This:

Power Qty Number
+0.25 10 1
+0.25 10 2
+0.50 10 3
+0.50 10 4
+0.50 10 5
+0.75 10 6
+0.75 10 7
+0.75 10 8
+0.75 10 9
+1.00 10 10
+1.25 10 11
+1.25 5 12
+1.50 5 12
+1.50 10 13
+1.50 2 14

Please help.