A series is given with one term missing. Select the correct alternative from the given ones that will complete the series.

Millimetre, Micrometre, Nanometre, ?

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

QRM, PWD, OBU, NGL, ?

Which letter-cluster will replace the question mark (?) to complete the given series?
 ZFOE, PYUA, FRAW, VKES, ?

Which of the f ollowing numbers will replace the question mark (?) in the given series?
 15, 27, 12, ?, 9, 33

Which letter-cluster will replace the question mark (?) to complete the given series?
 ERKV, HYVK, ?, NMRO, QTCD

Which letter cluster will replace the question mark (?) to complete the given series?
 NAME, NEME, ?, NOME, NUME

Which letter-cluster will replace the question mark (?) to complete the given series?
 TBNF, CJUL, LRBR, UZIX, ?

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

ACFD, CFHG, ?, GLLM, IONP