(1) There is a group of six person A , B, C, D, E and F in a family. They are Psychologist, Manager, Lawyer, Jeweller, Doctor and Engineer.
(2) The doctor is the grandfather of F who is a Psychologist.
(3) The manager D is married to A.
(4) C , the Jeweller, is married to the Lawyer.
(5) B is the mother of F and E.
(6) There are two married couples in the family.
How is A related to E ?

Options

A. Brother
B. Uncle
C. Father
D. Grandfather

Answer

D

Explanation

The 1st sentence and the 6th sentence are U.S.I. Let us begin with the sub sentence because it has a parent - child relationship. The diagram is :

Now, we should look for another sentence that involves B or F or E. We are that the only such sentence is the 2nd which gives some information about F. Please note that if the doctor is the grandfather of F and if B is the mother of F, then B must be the daughter - in - law of the doctor. The diagram become.

Now, the only two sentences remaining are 3rd and 4th . Their diagrams are :

We see that we have made three components or three different diagrams. How do we combine these informations into one ? Since all the actual informations are exhausted, we turn to the only information remaining . It is the last sentence that says that there are two married couples in the family . It means (look at the first diagram) that the doctor.s wife is alive. She must be the manager D and the doctor must be A because the professions of the other couple are jeweller and lawyer and not doctor. Now , C, the only one remaining, must be the husband of B, and hence B must be the lawyer. Hence , we have :

Note that the sex of F and E can.t be determined. But the profession of E must be Engineer, thanks to the U.S.I (1st sentence).