Select the combination of letters that, when placed in the blanks of the given letter series in order, will complete the series.
n o _ r _ o p r _ o p _ n _ p r
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → pnnro
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 16 places split into four blocks of four, each n o p r.
Block 1: n o _ r needs p
Block 2: _ o p r needs n
Block 3: _ o p _ needs n, r
Block 4: n _ p r needs o
The series is nopr nopr nopr nopr, and the blanks in order are pnnro.