2014 AIME I Problems/Problem 5
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Problem 5
Let the set consist of the twelve vertices of a regular -gon. A subset of is called "communal" if there is a circle such that all points of are inside the circle, and all points of not in are outside of the circle. How many communal subsets are there? (Note that the empty set is a communal subset.)
Solution
See also
2014 AIME I (Problems • Answer Key • Resources) | ||
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Followed by Problem 6 | |
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