In a certain code language, ‘FRIEND’ is written as ‘GQJDOC’, and ‘READER’ is written as ‘SDBCFQ’. How will ‘NUMBER’ be written in that language?

OTNAFQ

The logic followed here is :

F →(+1) → G

R → (-1) → Q

I → (+1) → J

E → (-1)  → D

N  → (+1) → O

D  → (-1) → C

AND

R →(+1) → S

E → (-1) → D

A → (+1) → D

D → (-1)  → C

E  → (+1) → F

R  → (-1) → Q

SIMILARLY:

N →(+1) → O

U → (-1) → T

M → (+1) → N

B → (-1)  → A

E  → (+1) → F

R  → (-1) → Q