Which letter should be 7th to the right of the 12th letter from left, if first half of the alphabet series is reversed?

In the word ‘LAVISLY’, replace each vowel with the next letter in the alphabetical series and each consonant with the previous letter in the Alphabetical Series. How many letters occur more than once in this newly formed word?

A series is given with one term missing. Select the correct alternative from the given ones that will complete the series.
 NMRQ, NDZG, NUHW, NLPM, ?

Which letter-cluster will replace the question mark (?) to complete the given series?
DRBZ, ABKX, ?, UVCT, RFLR

In the following question, which one set of letters when sequentially placed at the gaps in the given letter series shall complete it?
_q_rpq_r_qq_

Directions: Which one set of letters when sequentially placed at the gaps in the given letter series shall complete it.

l–n–mll-m–n–l

Direction: Answer the questions given below referring to the following arrangement.
2 L P 3 R * J @ C O 7 N I # 4 Q A B 6 $ M = D 5 K

What will come in the place of the question marks (?) in the following series based on the above arrangement?
P3R, @CO, I#4, B6$, ?

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

abCD, fgHI, ?, stUV, abCD