Question

What is F's profession?

• A. Doctor
• B. Engineer
• C. Teacher
• D. Data inadequate

Answer 1

Answer: (B)

Engineer

B, a male engineer travels with only G, a teacher in vehicle I. Since each vehicle has persons of both the sexes, so G is a female. C does not travel with A or F. Also, no person travels with any person of the same profession. Since C and D are both doctors, so C does not travel with D. Since A travels in vehicle II, so C travels with E in vehicle III. Since C is a female, so E is a male.
Thus, A, D and F travel in vehicle II. So, their professions must be different. D is a doctor. Since A is not an engineer, so A is a teacher and F is an engineer. A and F, being sisters, are both females.
B and F are two engineers, C and D are two doctors. So, A, E and G are all teachers.

Person	Vehicle	Profession	Sex
A	II	Teacher	Female
B	I	Engineer	Male
C	III	Doctor	Female
D	II	Doctor	Male
E	III	Teacher	Male
F	II	Engineer	Female
G	I	Teacher	Female

F is an engineer by profession.