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GATE CSE 2026 Session 1 Q7: 3D structure matching given front and top views

Question

In Panel I of the figure below, the front view and top view of a structure are shown. Which one of the 3D structures shown in Panel II possesses the views shown in Panel I?

Panel I shows the front view and top view of a block structure; Panel II shows four 3D block structures labelled (i) to (iv), each with arrows marking the top and front viewing directions
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Try it: multiple choice: exactly one correct option

Select one option
Wrong answer costs 2/3 mark in GATE.
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Answer: D (official GATE 2026 final answer key)

Concept used: Orthographic projection: each view shows the visible faces and edges seen from one direction.

First step: Use the top view first to rule out structures whose footprint differs, then check the front view's step pattern.

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Source: official GATE 2026 Session 1 CS question paper and final answer key, organised by IIT Guwahati. Question paper · Answer key

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