Directions : Study the following information carefully to answer the given…
2022
Directions : Study the following information carefully to answer the given questions:
Ten family members are sitting in two parallel rows containing five people each, in such a way that there is an equal distance between adjacent persons. In row–1 A, B, C, D and E are seated and all of them are facing north. In row-2 P, Q, R, S and T are seated and all of them are facing south. Therefore, in the given seating arrangement each member seated in a row faces another member of the other row.
P faces the one who sits 2nd to the left of his nephew. One person sits between P’s nephew and P’s mother. A is the sister-in-law of D who is not married. S is the granddaughter of B who sits left of P’s mother but not just left. R is the only brother of D who is the only immediate neighbour of B’s wife. Q is the husband of S and sits 2nd to the right of R’s father. A is the daughter of E and faces to the one who sits 2nd to the right of Q’s wife. P is the brother-in-law of R who is the father of C. T’s son sits just right of C’s brother-in-law. A’s father-in-law sits at one of the extreme ends. Both D and A are of same gender but opposite to C’s gender. B is not father of R.
How many persons sit between A’s father and T’s daughter?
- A.
Three
- B.
One
- C.
Two
- D.
None
- E.
Can’t be determined
Show answer & explanation
Correct answer: C
Concept
In a two-parallel-row arrangement, the two rows face each other, so a member of one row faces exactly one member of the other row. “Left” and “right” depend on the direction a person faces: for the north-facing row, left is towards one end and right towards the other, and for the south-facing row these are mirrored. The reliable method is: first fix the family tree (each person’s gender and generation) from the blood- and marriage-relation clues, then seat people using the directional, facing and neighbour clues, and accept only the single layout that satisfies every clue at once.
Building the family tree
R is the only brother of D and is the father of C. D is not married, so the person described as D’s sister-in-law (A) can only be the wife of D’s brother R. Hence A is married to R; A and D are female and C is male.
A is the daughter of E, so E is one of A’s parents. By clue 5, B’s wife sits at an extreme end with D as her only neighbour, which can only be E; hence B and E are husband and wife, making B the other parent — A’s father. The clues “one person sits between P’s nephew and P’s mother” and “P faces the one 2nd to the left of his nephew” also make P a brother of A, consistent with E being the mother of both A and P.
R’s father sits 2nd to the left of Q and at an extreme end. P is only R’s brother-in-law, so R’s father must be T. Thus T is A’s father-in-law, T’s son is R and T’s daughter is D.
Seating the rows
Applying the facing and neighbour clues, the only arrangement that fits is:
Row | Seat 1 | Seat 2 | Seat 3 | Seat 4 | Seat 5 |
|---|---|---|---|---|---|
Row-1 (North) | B | A | C | D | E |
Row-2 (South) | P | R | Q | S | T |
Cross-check
P faces B, who is 2nd to the left of P’s nephew C — consistent.
A faces R, who is 2nd to the right of Q’s wife S — consistent.
B’s wife E sits at the extreme end with D as her only adjacent member — consistent.
R (T’s son) sits just to the right of Q (C’s brother-in-law) — consistent.
Answer
A’s father is B and T’s daughter is D. Between them sit A and C, so exactly two persons sit between A’s father and T’s daughter.