I. A, B, C, D, E and F are six members of a family.

II. One couple has parents and their children in the family.

III. A is the son of C and E is the daughter of A.

IV. D is the daughter of F who is the mother of E.

Who are the male members in the family ?

A) A and C	B) C and F
C) A, B and D	D) Cannot be determined

Answer: D) Cannot be determined

Explanation:

E is the daughter of A and F is the mother of E. So, A is the father of E and hence the husband of F. Now,

D is the daughter of F. So, D and E are the daughters of A and F Also. A is the son of C.

Now, only B remains. Thus, B and C are the parents of A.

The sex of B and C cannot be determined:

Subject: Blood Relations