In a certain code language, MENTION is written as NEITNOM. How will PATTERN be written as in that language?

NAETTRP

The logic here is;

Lets understand how MENTION is written as NEITNOM;

(the first letter of MENTION is moved one step backwarrd and the remaining letters are reversed in order, taking 2 at a time)

So, in PATTERN ;

P will be coded as O and the sequence of remaining letters in code would be TAETNR

Thus, the code we get is NAETTRP