Select the letter cluster that will replace the question mark (?) in the following series.
MIAFI, NJBGJ, OKCHK, ?, QMEJM
Answer & explanation
Correct answer: option 1
The correct answer is Option (1) → PLDIL
Comparing the clusters letter by letter, each of the five letters moves one place forward from one term to the next.
MIAFI to NJBGJ: M→N, I→J, A→B, F→G, I→J; NJBGJ to OKCHK is the same step
One place forward from OKCHK: O→P, K→L, C→D, H→I, K→L, giving PLDIL
One more step gives QMEJM, the last term
So the missing cluster is PLDIL.