Let us imagine i have 14 marks to add of a student but i have had to
mark absent for one or more of these - our rule says to mark AB in
such cell (to distinguish it from a zero which is nil marks obtained
for a studnt who was present)

Now i have to add up on the marks i will get an error because of the
non-numeric data in one (or more) cell(s)

Right now we are processing with zero and a comment inserted which is a

bit more time consuming - any way out?


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perfection
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