If 'SUN' is coded as 15, 18, 21 and 'MOON' is coded as 12, 15, 18, 21, what is the code for 'STAR'?

A. 19, 22, 25, 28

In a coding system, 'FISH' is coded as '2468' and 'BIRD' is coded as '1357'. What is the code for 'HIS'?

A. 246

In a certain code, 'COLD' is coded as '1357' and 'WARM' is coded as '2468'. What is the code for 'MOLD'?

D. 1357

In a mixed letter coding system, if 'CAT' is coded as '312' and 'DOG' is coded as '415', what is the code for 'C' in the word 'CAT'?

A. 3

If 'HELLO' is coded as '12345' and 'WORLD' is coded as '67890', what is the code for 'O'?

B. 5