Instead of entering a lengthy formula like:

=IF(OR(D12<D7,D7<E9,E9<G2,G2<H17,H17<F11,F11< I6),"OUT","OK")

Any idea how to determine if all the cells are equal by entering address of
each cell once only, namely:
D12, D7, E9, G2, H17, F11, I6
or that of a range, like:
B1:B50
only once?

Thanx in advance.

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Best Regards,

Faraz