In a certain code language, 'mobile switched off' is written as 'rq mg cr' and 'turn off light' is written as 'my cp rq'.
How is 'off' written in the given language?

The correct answer is rq.

To find the code for the word 'off', let us analyze the given coded statements step-by-step:

1. 'mobile switched off' is written as 'rq mg cr'
2. 'turn off light' is written as 'my cp rq'

Now, compare the two statements to identify common words and their corresponding code words:

Common word in both statements: 'off'
Common code word in both statements: 'rq'

Since 'off' is the only word present in both statements and 'rq' is the only code word present in both coded representations, the code for 'off' must be 'rq'.