Mathematics, 02.10.2020 14:01 soupsah7304
Some amount of billiard balls were arranged in an equilateral triangle. And three balls were extra. When the same set of billiard balls were arranged into triangle in which each side has one more ball than in the first arrangement there were four billiard balls shortage. How many balls were in the set?
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Some amount of billiard balls were arranged in an equilateral triangle. And three balls were extra....
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