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 spouse of R ?

The correct answer is T.

Let us break down the clues step-by-step to determine the spouse of R:

Step 1: Analyze the marital status of each person
The group consists of five members: P, Q, R, S, and T.
- We are given that P and S are unmarried students.
- This leaves only three candidates who can be married: Q, R, and T.
- Since a marriage requires a pair of individuals within the group, the married couple must be chosen from the set {Q, R, T}.

Step 2: Identify the spouse of R
- We are told that T is a man married to one of the group members. Since P and S are unmarried, T must be married to either Q or R.
- We are also told that Q is the brother of P, which means Q is male.
- Following standard logical puzzle conventions, T (a man) is married to the remaining female member in the eligible set, which is R.
Therefore, R is married to T, meaning the spouse of R is T.