Three of the five students allocated to a hostel put in special requests to the warden. Given the floor plan of the vacant rooms, select the allocation plan that will accommodate all their requests.
Request by X: Due to pollen allergy, I want to avoid a wing next to the garden.
Request by Y: I want to live as far from the washrooms as possible, since I am very sensitive to smell.
Request by Z: I believe in Vaastu and so want to stay in the South-west wing.
The shaded rooms are already occupied. WR is washroom.

To solve this problem, we need to meet the specific room allocation requests of students X, Y, and Z, while considering the constraints of the room assignments based on their preferences and the physical layout of the hostel rooms.
Upon evaluation of these requests with the layout options presented in the question, the correct allocation that satisfies all requests is represented by the image with data-src-id="697626b50a5744a02a0b480c". This ensures:
The correct room allocation plan, accommodating all student requests, corresponds to the diagram shown below:

| Column X: Phonetic features | Column Y: Sanskrit terms |
|---|---|
| P. voicing | 1. prāṇa |
| Q. retroflex | 2. tālavya |
| R. palatal | 3. ghōṣa |
| S. aspiration | 4. mūrdhanya |
| Column X: Morphological Concepts | Column Y: Examples |
|---|---|
| P. Suppletion | 1. bookmaker – bookie |
| Q. Conversion | 2. deer – deer |
| R. Zero morpheme | 3. bad – worst |
| S. Hypocorism | 4. arrive – arrival |
| T. Derivation | 5. (a) doctor – (to) doctor |

An ant is at the bottom-left corner of a grid (point P) as shown above. It aims to move to the top-right corner of the grid. The ant moves only along the lines marked in the grid such that the current distance to the top-right corner strictly decreases.
Which one of the following is a part of a possible trajectory of the ant during the movement?
A building has several rooms and doors as shown in the top view of the building given below. The doors are closed initially.
What is the minimum number of doors that need to be opened in order to go from the point P to the point Q?