Find the missing letter in the series: b, d, f, h, ?

A. J

Identify the odd pair of words from the following options.

C. CHEF - RECIPE

If the code for 'CAT' is represented by the numbers 3, 1, 20 and the code for 'DOG' is represented by 4, 15, 7, what is the code for 'BAD'?

A. 2, 1, 4

Identify the missing letter in the pattern: A, C, E, ?, I.

A. G

If 'FISH' is coded as 6, 9, 19, 8 and 'BIRD' is coded as 2, 9, 18, 4, what is the code for 'HIDE'?

A. 8, 9, 4, 5