Directions: Study the following information carefully to answer the given questions. An uncertain number of persons are sitting in a straight line facing the north direction. The persons sitting at the odd-numbered positions are Managers and the persons sitting at the even-numbered positions are Associates in different companies. Both X and Z are seated to the left of U and P, but to the right of Q. There are five persons between J and G. The person sitting fifth to the right of Q is an Associate. Two persons are seated between Q and R. The number of persons sitting between Q and the Manager at the extreme left end is one more than the number of persons sitting between J and P. The number of persons sitting between R and G is the same as the number of persons sitting between X and Z. Four persons are seated between Q and T, who is not seated to the right of R. The Manager at the extreme left end of the row is S. Three Managers are seated between T and X. J sits 3rd to the right of R. The number of persons sitting between Q and R is one more than the number of persons sitting to the right of G. P is the third Associate to the right of J. Who is seated exactly in the middle of R and the person who sits immediately to the left of Z, if the total number of persons is known and the seating alternates between Managers and Associates?

### Concept & Logical Deduction Linear seating puzzles with distance constraints rely heavily on establishing coordinate positions. Finding the "middle" requires averaging the position indices of the two target individuals. ### Step-by-Step Solution From the decoded seating arrangement (Total 20 persons): * Positions are strictly mapped from left to right (1 to 20). * S(1), T(2), Q(7), X(8), R(10), J(13), Z(17), P(18), G(19), U(20). * **Identify Target 1**: The person R is located at position 10. * **Identify Target 2**: Z is located at position 17. The person sitting immediately to the left of Z is at position $17 - 1 = 16$. * **Find the Midpoint**: To find the exact middle of positions 10 and 16, calculate the average: $$ \text{Midpoint} = \frac{10 + 16}{2} = \frac{26}{2} = 13 $$ * Look up position 13 in the master arrangement. The person sitting at position 13 is J. ### Exam Strategy & Shortcut If you know the positions mathematically, never count manually on your fingers or on a drawn line. Just average the two indices. If the result is a fraction (e.g., 13.5), it means there is no single middle person. Here, 13 is an integer, making J the clear answer. ### Common Pitfall Accidentally finding the middle between R(10) and Z(17) instead of the person *immediately to the left* of Z. $(10+17)/2 = 13.5$, which would incorrectly lead you to select "Unknown person" or "None". Always read the relational descriptors carefully. ### Final Answer Therefore, the correct answer is **J**.