If X - Y means X is the uncle of Y, X + Y means X is the aunt of Y, and X ÷ Y means X is the brother of Y, what is the relationship of Z if X - Y ÷ Z?

A. Z IS X'S NEPHEW

X is the father of Y. Y is the daughter of Z. How is Z related to X?

B. WIFE

If D is the daughter of E, and E is the mother of F, what is the relationship of D to F?

A. SISTER

If G is the uncle of H, and H is the daughter of I, what is the relationship of G to I?

B. BROTHER-IN-LAW

Which of the following jumbled descriptions correctly describes a 'computer'?

A. AN ELECTRONIC DEVICE THAT PROCESSES DATA AND PERFORMS TASKS ACCORDING TO A SET OF INSTRUCTIONS.