A square sheet of paper is folded along the dotted line(s) in the direction shown and then punched as shown in the last figure. How will the sheet look when it is unfolded?
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Answer: Option C
Detailed Solution
Unfold in the reverse order of folding; every hole is copied as a mirror image across each fold line, so the 1 punch(es) become 4 holes.
A triangle that points towards a vertical fold line points away from it on the other side (it is mirrored, not just copied).
Only answer figure (C) shows every hole in its mirrored position. The others slide holes across instead of mirroring them, mirror across the wrong line, open only part of the folds, or show holes that were never punched.
Hence, option (C).
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Ask a doubtMore Paper Folding Questions
View all ›- Q1.A square sheet of paper is folded along the dotted line(s) in the direction shown and then punched as shown in the last figure. How will the sheet look when it is unfolded?
- Q2.A square sheet of paper is folded along the dotted line(s) in the direction shown and then punched as shown in the last figure. How will the sheet look when it is unfolded?
- Q3.A square sheet of paper is folded along the dotted line(s) in the direction shown and then punched as shown in the last figure. How will the sheet look when it is unfolded?
- Q4.A square sheet of paper is folded along the dotted line(s) in the direction shown and then punched as shown in the last figure. How will the sheet look when it is unfolded?
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Paper Folding — Preparation
This question tests your understanding of Paper Folding, a key topic in the Logical Reasoning section. The detailed solution above uses a step-by-step approach to show the reasoning, and where available, a shortcut that helps you solve similar questions in under 90 seconds during the actual exam.
Paper folding questions show a square sheet of paper being folded one or more times and then punched or cut. You must work out what the paper looks like when it is unfolded. A related type, paper cutting, shows a folded sheet with a shape cut out of it. The key idea is that every hole or cut appears again as a mirror image across each fold line when the paper is opened. Work backwards. Unfold the last fold first, reflecting every hole across that fold line, then unfold the previous fold, reflecting all the holes again, and so on. Each fold doubles the number of holes. If a sheet is folded twice and punched once, there will be four holes when it is opened. Counting the holes quickly rules out wrong options. Practise the paper folding questions below. Each solution shows the unfolding step by step.