In a group of 25 people, if Tom is ranked 8th from the top and 18th from the bottom, how many people are there in total?

B. 25

Bird is to Nest as Fish is to ?

B. TANK

In a certain code, 'CAT' is coded as '312' and 'DOG' is coded as '415'. How is 'C' coded?

A. 3

In a certain code, 'CAT' is coded as '3120'. How is 'DOG' coded in the same language?

A. 4157

What is the next letter in the series: A, C, E, G, ?

B. H