Problem 8 · 2015 Math Kangaroo
Medium
Spatial & Visual Reasoning
spatial-reasoning
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Answer: E
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Hint 1 of 2
A magnified circular patch must match a piece of the squiggly drawing exactly in how the lines cross it.
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Hint 2 of 2
Compare the line pattern inside each circle with what actually appears in the picture; one pattern never occurs.
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Approach: match each magnified circle to a region of the picture
- Through the magnifying glass Peter sees a round window onto part of the drawing, so the lines inside the circle must reproduce a real crossing in the picture.
- Four of the circles match a place where the curves cross or pass through as shown.
- The pattern of lines in circle E does not occur anywhere in the picture, so that is the section he cannot see.
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