Which letter-cluster will replace the question mark (?) to complete the given series?
FCBZ, KGEB, ?, UOKF, ZSNH
1
PLGD
2
PLHD
3
PKGD
4
PKHD
Which letter-cluster will replace the question mark (?) to complete the given series?
FCBZ, KGEB, ?, UOKF, ZSNH