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

B. H

What is the result of (x^2 - 1) ÷ (x - 1)?

A. X + 1

If A + B means A is the brother of B, A - B means A is the sister of B, and A × B means A is the father of B, what is the relationship of C if A + B × C?

D. C IS A'S SON

If A=1, B=2, C=3, and so on, what is the code for the word 'CAT'?

A. 312

Tree is to Forest as Star is to ?

B. GALAXY