=SUMPRODUCT((A2:A1000<"")/COUNTIF(A2:A1000,A2:A1000&""))


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HTH

Bob Phillips

(replace somewhere in email address with googlemail if mailing direct)

"Lucas Lehmer"
wrote in message
news:Lucas.Lehmer.28f4em_1148652601.2249@excelforu m-nospam.com...

Hello everyone,

Let's say I have a range A1:A1000, each cell containig a natural
number.
For my purposes these values are OK if and only if they are all
different.
Is there an easy way to count the number of different cells in a
range?

Many thanks!


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Lucas Lehmer
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