Identify the missing letter in the series: Z, X, V, T, ?

B. S

Author is to Book as Painter is to ?

A. CANVAS

Five animals are arranged in a line: Lion, Tiger, Bear, Wolf, and Fox. The Lion is not next to the Tiger. The Bear is next to the Wolf but not next to the Fox. Which animal is in the middle?

C. BEAR

If the word 'CATER' is coded as 'DATUS', how is 'FLOOR' coded in the same manner?

A. GMPPS

In the sequence 5, 10, 15, 20, what is the next number?

B. 25