A1 B1 C1 D1
A2 B2 C2 D2
A3 B3 C3 D3

How can I do the following in A1, A2, A3:

If B1 _AND_ B2 _AND__B3 are Blank the A1=YES.
IF B1 _OR_ B2 _OR_ B3 have any values then A1= NO

Thanks!


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Portuga
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