SOLUTION: 5,13,37,77,229,next no. In the series

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Question 1072308: 5,13,37,77,229,next no. In the series
Answer by Edwin McCravy(20060)   (Show Source): You can put this solution on YOUR website!

Start with 5:

  5×2+3 =  10+3 =  13
 13×3-2 =  39-2 =  37
 37×2+3 =  74+3 =  77
 77×3-2 = 231-2 = 229, so using that pattern,
229×2+3 = 687+3 = 690

Edwin
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