Which word is in the middle when arranged alphabetically: Zebra, Yak, Xylophone, Whale?

B. YAK

In a certain code, 'FISH' is written as 'GJTI'. How would 'BIRD' be encoded?

A. CJSF

If the pattern is A, C, E, G, what comes next?

A. I

Which of the following does not belong in the series: 2, 4, 8, 16, 32, 64, 128, ?

A. 256

Identify the pattern: 1, 1, 2, 3, 5, 8. What is the next number?

D. 13