Which one set of letters when sequentially placed at the gaps in the given letter series shall complete it?
By Trial and Error method,
Option A
oopq | opoq | oopq | oooq | oppq
The above letters do not form a series. Hence option A is incorrect.
Option B
oopq |oppq | oooq | oooq | oppq
The above letters do not form a series. Hence option B is incorrect.
Option C
oopq | opoq | oopq | opoq | oopq
The above letters form a series.
Hence, the correct answer is Option C
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