Which letter-cluster will replace the question mark (?) to complete the given series?

GTCL, KWEM, OZGN, SCIO, ?

In a certain code language, “XPDJOA” is written as “DPXAOJ” and “THBRUC” is written as “BHTCUR”. How will “GILDZM” be written in that language?

In a certain code language, ‘SLAP’ is coded as ‘3160’ and ‘PAST’ is coded as ‘6071’. What is the code for ‘L’ in the given code language?

Select the option that represents the letters that, when sequentially placed from left to right in the blanks below, will complete the letter series.

C ___ ___ UP ____ EX ____ PC ____ XU ___ ___ E ___ UP