In the series 2, 4, 8, 16, what is the next number?

C. 32

Find the next term in the series: A1, B2, C3, D4, ?

A. E5

In a certain code, if 'CAT' is coded as '3120', 'DOG' is coded as '4157', what is the code for 'FISH'?

A. 6148

In the sequence X, Y, Z, A, B, what comes next?

A. C

In the series 2, 4, 8, 16, what is the next number?

C. 32