Maths Olympiad Prep

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, 2018

Geometry Difficulty 4.7 AIME Find the answer United States

Problem:

In a wooden block shaped like a cube, all the vertices and edge midpoints are marked. The cube is cut along all possible planes that pass through at least four marked points. Let NN be the number of pieces the cube is cut into. Estimate NN.

An estimate of E>0E>0 earns 20min(N/E,E/N)\lfloor 20 \min (N / E, E / N)\rfloor points.

A number or a short expression. Fractions can be typed as 3/2, and spacing doesn't matter.

Solution

Solution:

15600

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Source: MathNet, licensed CC-BY-4.0. Statement reproduced verbatim; metadata (topic, difficulty) added by this project.