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GATE 2022 PI – Question 5

General Aptitude · Spatial Aptitude: Spatial Reasoning and Visualization · 1 mark · Multiple choice

The top view shows a building with several rooms and initially closed doors. Find the minimum number of doors that must be opened to travel from P to Q.

Diagram for GATE 2022 PI question 5
  1. 4
  2. 3
  3. 2
  4. 1

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Correct answer: (C) 2

Explanation

P lies in the bottom corridor. Open the door from it into the left/lower interior region, then open the central lower door into the region containing Q. This gives a two-door route. One door cannot suffice because P’s sole exit does not directly enter Q’s region. **2, C**.

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