Complete the following series.
AZBY, CXDW, EVFU, ?

Complete the following series –
_ _ aba _ _ ba _ ab

What will come in place of question mark(?) in the following number series?

BDE, CFG, EJK,  ?

What comes in place of question mark (?) in the series given below?
W-144, ?, S-100, Q-81, O-64

Find the next term in the following series.
ZA5, Y4B, XC6, W3D, _____

In the word INSTRUCT, how many alphabets are there between which there are as many letters as there are between them in the English alphabet? 

A series is given with one term missing. Select the correct alternative from the given ones that will complete the series.
 LOG, FLH, ZII, TFJ, NCK,?

In the following question , a series is given with one terms missing . Choose the correct alternative from the given ones that will complete the series :

ABC , DEF , HIJ , ?