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Non-verbal Reasoning · Question 20 of 65

Gurpreet halves a square card with a single fold and makes one punch through the double layer.

Question 20

EasyOriginal question

Gurpreet halves a square card with a single fold and makes one punch through the double layer. Which picture shows the card when it is opened?

A square sheet, thought of as a 4 by 4 grid: the bottom half is folded up onto the top half. One hole is then punched through the folded sheet, in the square at (row, column) (2, 3) of the original sheet.
Options for question 20

Show the answer and explanation
CorrectNot quiteAnswer D

Correct answer: D

Explanation

  1. Open the folds in reverse order. Opening a fold adds the mirror image of every hole across that fold line, because each hole went through both layers.

  2. Opening step 1 (the horizontal fold) gives holes at (2, 3), (3, 3) (row, column).

  3. Figure 4 shows these 2 holes.

Worth noting

The folded sheet has 2 layers, so each punch makes 2 holes. A figure with fewer holes has left a fold closed; one with the right number in the wrong places has opened a fold about the wrong line.

Concept
Unfolding a punched sheet: reflect the holes across each fold line
Typical time
40 s
Your time
—
The rule this testsPaper folding and punching
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