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What is the next mumbers in the series ? 9, 31, 73, 141, _, _, _, ?

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What is the next mumbers in the series ? 9, 31, 73, 141, _, _, _, ?
posted Feb 25, 2015 by Tanmoy Debnath

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1 Answer

+3 votes
 
Best answer

9 = 1^2 + 2^3
31 = 2^2 + 3^3
73 = 3^2 + 4^3
141 = 4^2 + 5^3
So
5^2 + 6^3 = 241
6^2 + 7^3 = 379
7^2 + 8^3 = 561

answer Feb 27, 2015 by Jaspalsingh Parmar
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