“a couple apples,” or “a couple of apples,” which is the correct one? after some sniffing around i find that both are acceptable.
a thread at linguist-list has a useful discussion on this very topic.
the free dictionary has this usage note:
Although the phrase a couple of has been well established in English since before the Renaissance, modern critics have sometimes maintained that a couple of is too inexact to be appropriate in formal writing. But the inexactitude of a couple of may serve a useful purpose, suggesting that the writer is indifferent to the precise number of items involved. Thus the sentence She lives only a couple of miles away implies not only that the distance is short but that its exact measure is unimportant. This usage should be considered unobjectionable on all levels of style.·The of in the phrase a couple of is often dropped in speech, but this omission is usually considered a mistake, especially in formal contexts. Three-fourths of the Usage Panel finds the sentence I read a couple books over vacation to be unacceptable; however, another 20% of the Panel finds the sentence to be acceptable in informal speech and writing.
to summarize, carry on with using whichever you were using.