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

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

Direction: Study the following arrangement carefully and answer the questions given below.
C 3 # R A T 1 E J $ K @ F U 5 4 V I 6 © D 8 * H N 7 δ 2 W

Which of the following is seventh to the left of the twentieth from the left end of the above arrangement? 

How many such pairs of letters are there in the word ‘ANIMATION’ each of which has as many letters between them in the word as in the English alphabet?

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

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

BDE, CFG, EJK,  ?

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