What should come next in the following letter sequence?

A A B A B C A B C D A B C D E A B C D

What should come next in the following letter series based on English alphabet ?
CEA JLH QSO ?

In a certain code ARCHIVE is written as DSBGFWJ. How is SYSTEMS is written in that code ?

Choose the Antonym of the following word

'Autonomy'

If it is possible to make a meaningful word from the second, the seventh, the ninth and the eleventh letters of the word ORGANISATION using each letter only once, then which will be the third letter of that word ? If no such word can be formed, your answer would be 'X' and if more than one such words can be formed, your answer would be 'M' ?

If the first and third letters in the word NECESSARY were interchanged, also the fourth and the sixth letters, and the seventh and the ninth letters, which of the follwing would be the seventh letter from the left ?

If the following five names which name will come  in the last in a telephone directory ?

a) Mahinder  b) Mahender  c) Mahindra  d) Mahendra  e) Mohinder

S L U A Y J V E I O N Q G Z B D R H

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

LA  UJ  YI  EG  ?

LAP  BUT  CAR  SON  HID

If the positions of the first and the third alphabets of each of the words are interchanged, which of the following would form a meaningful word in the new arrangement?