Select the combination of letters that, when placed in the blanks of the given letter series in order, will complete the series.
z a _ b x _ a _ b x _ a y _ x
Answer & explanation
Correct answer: option 4
The correct answer is Option (4) → yzyzb
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 15 places split into three blocks of five, each z a y b x.
Block 1: z a _ b x needs y
Block 2: _ a _ b x needs z, y
Block 3: _ a y _ x needs z, b
The series is zaybx zaybx zaybx, and the blanks in order are yzyzb.