If A is the brother of B, and B is the sister of C, what is the relationship of A to C?

A. BROTHER

If X is the father of Y and Y is the son of Z, what is Z's relation to X?

C. MOTHER

In a family, P is the brother of Q, Q is the sister of R, and R is the father of S. How is P related to S?

A. UNCLE

In the sequence 7, 14, 21, 28, 35, 42, how many times does the number 21 occur?

B. 1

If '>' means addition, '<' means subtraction, '=' means multiplication, and '?' means division, what is the value of 6 > 2 < 3 = 4 ? 2?

C. 22