Select the combination of letters that, when placed in the blanks of the given letter series in order, will complete the series.
_ _ m _ o g n g _ _ n o _ _ g g m
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → ggngmgn
In a letter series with blanks, look for a block of letters that repeats; the blanks are then the letters the block needs at those places. The 17 places split into two blocks of seven, each g g m n o g n, and the first three letters of the block once more.
Block 1: _ _ m _ o g n needs g, g, n
Block 2: g _ _ n o _ _ needs g, m, g, n
Last three places: g g m, the start of the block again
The series is ggmnogn ggmnogn ggm, and the blanks in order are ggngmgn.