1998 AMC 8 Problem 18
Attempt Problem 18 of the 1998 AMC 8 below, then check your answer against the professionally curated solution from LIVE by Po-Shen Loh. You can also try the full timed exam, view all 1998 AMC 8 solutions, or check the answer key.
All problems are used with official legal permission of the Mathematical Association of America (MAA).
18.
As indicated by the diagram below, a rectangular piece of paper is folded bottom to top, then left to right, and finally, a hole is punched at What does the paper look like when unfolded?
Answer: B
Small hint:
Unfold the last fold first.
Big hint:
Each fold reflects the hole across the fold line.
Solution:
The final folded rectangle is the upper-right quarter of the original sheet, and the hole is punched in the upper-left part of that folded rectangle.
Unfolding reflects the hole across the horizontal and vertical fold lines. Only choice B has the four corresponding holes.
Thus, the correct answer is B .
Problem 18 in other years
- 1985 AMC 8
- 1986 AMC 8
- 1987 AMC 8
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