Question 48

Select the letter-cluster from among the given options that can replace the question mark (?) in the following series.
AEI, EIO, IOU, ?

As we know that there are five vowels in an alphabetical series which are A, E, I, O and U.

So here in the given series, three vowels are written in sequential form. From one term to another one, one vowel is removed and new vowel is added in a sequential form.

AEI, EIO, IOU, OUA

Hence 'OUA' will come in place of the question mark.

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