GATE 2026 MT – Question 10
Which one of the patterns labeled P, Q, R, and S is used to generate the figure shown above them?

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Correct answer: (B) Q
Explanation
Compare one full repeat of the strip with each proposed tile, preserving the orientation of its top-left protrusion and the internal diagonal black staircase. Tile Q reproduces the central staircase and the right-edge connectors needed to join consecutive repeats. P reverses part of the staircase, while R/S alter the upper boundary. Thus **Q, B**.