question_answer

Examine the following relationships among members of a family of six persons A, B, C, D, E and F.

1.   The number of males equals that of females

2.   A and E are sons of F.

3.   D is the mother of two, one boy and one girl

4.   B is the son of A

5.   There is only one married couple in the family at present.

Which one of the following inferences can be drawn from the above?

A)  A, B and C are all females

B)  A is the husband of D

C)  E and F are children of D

D)  D is the granddaughter of F

Correct Answer: B

Solution :

[b] ?O? \[\to \] Female, ?\[\square \]? \[\to \] Male, ?\[\leftrightarrow \]? \[\to \] Couple, ?\[\downarrow \]?  \[\to \] Offspring             Since, there is only 1 married couple, so D must be married to A, as D is the mother of two and B is the son of A. Also, as number of males and females are equal, so F must be a female.