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Non-verbal Reasoning · Question 18 of 65

Meera folds a square of paper in half along the dashed line and punches one hole where the figure marks it.

Question 18

EasyOriginal question

Meera folds a square of paper in half along the dashed line and punches one hole where the figure marks it. How does the paper look when she unfolds it?

A square sheet, thought of as a 4 by 4 grid: the top half is folded down onto the bottom half. One hole is then punched through the folded sheet, in the square at (row, column) (4, 2) of the original sheet.
Options for question 18

Show the answer and explanation
CorrectNot quiteAnswer B

Correct answer: B

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 (1, 2), (4, 2) (row, column).

  3. Figure 2 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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