In a certain code language, 'DOGS' is written as '5279', 'DRAW' is written as '1032', 'DOWN' is written as '8205'. What is 'S' written in that code language?

7

In this code, 'DOGS' is written as '5279',

'DRAW' is written as '1032',

'DOWN' is written as '8205

⇒ We can deduce that the code for 

'D' is '2'

''W' is '0'

'O' is '5'

Based, on that the code for 'S' can be '7' or '9'

Since, 9 is not in the option we can assume that code for 'S' is '7'.