UPSC Prelims 2016 CSAT Paper II · Q18 of 79 Comprehension medium

Passage

Directions for the following 5 (five) items : Consider the following information and answer the five items that follow : There are five persons in a group — P, Q, R, S and T. The group has one doctor, one lawyer and one artist. P and S are unmarried students. T is a man married to one of the group members. Q is the brother of P and is neither doctor nor artist. R is not doctor.

Who is the lawyer ?

  1. (a) P
  2. (b) Q ✓ UPSC's answer
  3. (c) R
  4. (d) S

Why the answer is (b)

• Q is the brother of P and is explicitly stated to be neither a doctor nor an artist, which leaves only the profession of lawyer for Q.

• Since the group contains exactly one doctor, one lawyer, and one artist, and Q is identified as the lawyer, the other professions must be assigned to the remaining members.

• R is not a doctor, so R must be the artist (as Q is the lawyer and P/S are students, though the prompt implies professions are held by specific individuals, the direct deduction for Q is sufficient).

• The statement that Q is neither doctor nor artist directly implies Q is the lawyer, as these are the only three professions listed for the group.

• Therefore, Q is the lawyer.

Why the other options are wrong

(a) P
P is an unmarried student and the profession of lawyer is assigned to Q based on the elimination of doctor and artist for Q.
(c) R
R is not a doctor, but the lawyer is specifically identified as Q because Q is neither a doctor nor an artist.
(d) S
S is an unmarried student and the lawyer is Q, who is neither a doctor nor an artist.

Asked in the CSAT Paper II of the UPSC Civil Services Preliminary Examination 2016, held on 7 August 2016. Question and answer key: Union Public Service Commission. Explanation: UPSC Answer Check.

Reading the answer is not the same as getting it right under a clock. Practise this question with UPSC's negative marking, and anything you miss goes into an error notebook until you get it right twice.

Practise this paper free