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Mathematics, 11.06.2021 02:10, kyrarix
Telephone poles are stored in a pile with 30 poles in the first layer, 29 in the second, and so on. If there are 12 layers, how many telephone poles does the pile contain?
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Answers: 2
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Telephone poles are stored in a pile with 30 poles in the first layer, 29 in the second, and so on....
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