Which of the following letter-clusters will replace the question mark (?) in the given series to make it logically complete?
OEK 16 PJN 9 ? RTT −11 SYW −24
1
OUI 9
2
QOQ 0
3
QIO 7
4
ROP 3
Which of the following letter-clusters will replace the question mark (?) in the given series to make it logically complete?
OEK 16 PJN 9 ? RTT −11 SYW −24