Which letter-cluster will replace the question mark (?) to complete the given series?
PBXJ, TFJX, ?, BNJX, FRXJ
1
WKJX
2
VKJX
3
VLXJ
4
XJXJ
Which letter-cluster will replace the question mark (?) to complete the given series?
PBXJ, TFJX, ?, BNJX, FRXJ