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Question: Christmas greeting is the solution

Question:Christmas greeting is the solution

Alfred_F 260 Maple 2024
geometry
December 15 2024
1

A gardener wants to spread 25 roses over an area so that there are 5 roses in each of 15 straight rows. The roses should be arranged rotationally symmetrically so that more than 3/4 of them are less than half as far from the center of symmetry as the outermost ones and that the center of symmetry itself remains unplanted. How is such an arrangement possible?
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