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What is the next number of the following sequence - 79, 159, 279, 519, ??

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What is the next number of the following sequence - 79, 159, 279, 519, ??
posted Jun 14, 2016 by anonymous

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1 Answer

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79 => 79+ (7+1)*(9+1) = 79+ 8*10 = 79+80 = 159
159 => 159+ (1+1)*(5+1)*(9+1) = 159+ 120 = 279
279 => 279+ (2+1)*(7+1)*(9+1) = 279+ 240 = 519
Similarly
519 => 519+ (5+1)*(1+1)*(9+1) = 519+ 120 = 639

answer Jun 14, 2016 by Ranveer Pratap
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