A family consists of six members P, Q, R, S, T and U. There are two married couples. Q is a doctor and the father of T. U is the grandfather of R and is a contractor. S is the grandmother of T and is a housewife. In this family there is one doctor, one contractor, one nurse, one housewife and two students. What is the profession of P?

Introduction / Context:
This is a logical family puzzle that mixes relationships with professions. You must place each person into the correct generation and marital pair, then match them with the given list of professions. It tests your ability to combine multiple clues about roles and counts of professions, which is a common pattern in reasoning sections of competitive exams.

Given Data / Assumptions:

• Members are P, Q, R, S, T and U.
• There are two married couples.
• Q is a doctor and the father of T.
• U is the grandfather of R and is a contractor.
• S is the grandmother of T and is a housewife.
• The five roles are one doctor, one contractor, one nurse, one housewife and two students.

Concept / Approach:
First, identify the generations. U and S are grandparents because U is the grandfather of R and S is the grandmother of T. Q is a parent of T, so Q is in the middle generation. The remaining middle generation member is P, who must be the spouse of Q to form the second married couple (the first being U and S). R and T are in the youngest generation as grandchildren of U and S. Professions are fixed for Q (doctor), U (contractor) and S (housewife). The remaining profession list shows one nurse and two students, so R and T are students, leaving P as the only candidate for the nurse role.

Step-by-Step Solution:
Step 1: From U is grandfather of R, U is in the top generation and is a contractor.Step 2: From S is grandmother of T and is a housewife, S is also in the top generation and is married to U.Step 3: Q is the father of T and is a doctor. So Q is in the middle generation and married.Step 4: The second spouse in the middle generation must be P, otherwise there would not be two married couples.Step 5: R and T are grandchildren, so they are in the youngest generation. With given profession counts, they naturally fit as the two students.Step 6: The professions used so far are doctor (Q), contractor (U), housewife (S) and two students (R and T). The only remaining role is nurse, which must belong to P.

Verification / Alternative check:
Check counts: exactly one doctor (Q), one contractor (U), one nurse (P), one housewife (S) and two students (R and T). The number of married couples is two: U with S, and Q with P. All clues about grandparents and parents are satisfied: U and S are grandparents, Q and P are parents, R and T are grandchildren. Any attempt to assign nurse to someone else breaks either the profession counts or the marital structure, confirming that P must be the nurse.

Why Other Options Are Wrong:
Doctor is already used by Q and there is only one doctor.Housewife is used by S, and another housewife would violate the one housewife condition.Contractor is fixed for U.None of these is incorrect because nurse fits P perfectly and maintains all counts and relationships.

Common Pitfalls:
Some students forget to enforce the count of each profession and may assign student roles incorrectly to the middle generation. Others overlook the condition of exactly two married couples and create extra marriages or leave someone single. Always structure these puzzles by generation first, then by couples, and finally by role counts. That method almost always leads to a unique consistent answer.

Final Answer:
The profession of P in this family is Nurse.