In a coding system, the word 'HELLO' is coded as 'KHOOR'. What is the code for the word 'WORLD'?

A. ZRUOG

In a coding scheme, 'FISH' is coded as '6789' and 'BIRD' is coded as '1234'. What is the code for 'RIB'?

A. 234

In a certain code, 'APPLE' is coded as 'ZKQIV'. How is 'LEMON' coded in the same language?

A. OVNQM

If A=1, B=2, C=3, and so on, what is the code for the word 'CAT'?

B. 312

If 'RAT' is coded as 181920, what is the code for 'BAT'?

A. 221820