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GATE CSE 2026 Session 2 Q2: Other part of a black square cut into two pieces

Question

A black square PQRS has been cut into two parts. One part of it is shown in Panel I. Which one of the shapes in Panel II is the other part?

Panel I shows a black square PQRS with a white irregular cut-out; Panel II shows four black candidate shapes labelled (i) to (iv)
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Try it: multiple choice: exactly one correct option

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Answer: C (official GATE 2026 final answer key)

Concept used: Spatial reasoning: the missing piece must exactly fill the white region of the square.

First step: Trace the outline of the white cut-out in Panel I step by step and compare its notches with each shape in Panel II.

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Source: official GATE 2026 Session 2 CS question paper and final answer key, organised by IIT Guwahati. Question paper · Answer key

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