In letter coding type of questions, the real alphabets in a word are replaced be certain other alphabets according to a specific rule to form its code. The candidate is required to detect the common rule and answer the questions accordingly.
If in a certain language MYSTIFY is coded as NZTUJGZ, how is NEMESIS coded in that language ?
Clearly, each letter in the word MYSTIFY is moved one step forward to obtain the corresponding letter or the code.
(M → N), (Y → Z), (S → T), (T → U), (I → J), (F → G), (Y → Z)
MYSTIFY → NZTUJGZ
So, in NEMESIS, N will be coded as O, (E as F), (M as N), (E as F), (S as T), (I as J) and (S as T).
Thus the code becomes OFNFTJT.
Hence, the answer is (b).