In a coding scheme, 'BOOK' is coded as '2453' and 'PEN' is coded as '167'. What is the code for 'BOOKPEN'?

A. 2453167

In a coding system, if 'HELLO' is coded as 'KHOOR', what is the code for 'WORLD'?

A. ZRUOG

If 'COLD' is coded as 35712, what is the code for 'WARM'?

A. 231813

In a certain code, if 'DOG' is coded as '415', what is the code for 'FISH'?

A. 61489

In a certain code, 'APPLE' is coded as '12345'. What is the code for 'LEMON'?

A. 125314