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OpenStudy (anonymous):
A child is creating a pyramid with building blocks. The top three levels include 3 blocks, 7 blocks, and 11 blocks. How many blocks would be needed for a pyramid 25 levels tall? Use complete sentences to explain how a sum of an arithmetic series was applied?
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OpenStudy (anonymous):
An AP 3,7,11,14.................. find sum of series upto 25 terms
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