In a certain code language, ‘ETYJ’ is coded as ‘5970’ and ‘JEFT’ is coded as ‘0857’. What is the code for ‘F’ in the given code language?

Given: 

In a certain code language, ‘ETYJ’ is coded as ‘5970’ and ‘JEFT’ is coded as ‘0857’.

E, T, J and 5, 7, 0 are common in both.

So, the code of F is 8.

Thus, correct option is (b).