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Other ways of saying whichs

Is the following grammatically correct?

Sampling was mainly random, with the exception of some services which indexes, calculated with the Triadas method, were not satisfactory

The indices belong to the services.

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marked as duplicate by FumbleFingers, JSBձոգչ, kiamlaluno, Mitch, RegDwigнt Apr 4 '12 at 7:24

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2 Answers 2

up vote 4 down vote accepted

No. Whose is the word required, not which:

Sampling was mainly random, with the exception of some services whose indexes, calculated with the Triadas method, were not satisfactory.

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"Which," here, indicates that the indices were services. "Whose" is possessive.

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