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What is the next number in the following series : 18 ; 82 ; 86 ; 122 ; 606 ; 642 ; ?

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What is the next number in the following series : 18 ; 82 ; 86 ; 122 ; 606 ; 642 ; ?
posted Aug 24, 2015 by Aastha Joshi

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1 Answer

+2 votes
 
Best answer

18 + 8^2 = 18+64 = 82
82 + 2^2 = 82+4 = 86
86 + 6^2 = 86+36 = 122
122 + 22^2 = 122+484 = 606
606 + 6^2 = 606+36 = 642
Similarly
642 + 42^2 = 2406
manish rinwa

answer Aug 25, 2015 by anonymous
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