Select the letter-cluster from among the given options that can replace the question mark (?) in the following series.
PND, QKI, RHN, SES, ?
Answer & explanation
Correct answer: option 1
Explanation:
PND, QKI, RHN, SES, ?
The logic followed here is :
P → (+1) → Q → (+1) → R → (+1) → S → (+1) → T
N → (-3) → K → (-3) → H → (-3) → E → (-3) → B
D → (+5) → I → (+5) → N → (+5) → S → (+5) → X
So, the letter-cluster that replaces the (?) to complete the series is "TBX"