What is the next number?

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What are the next numbers in the following sequence? 21 , 24 , 30 , 33 , 39 , 51 , . . . 21, 24, 30, 33, 39, 51,...

63 57 59 54

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1 solution

Ossama Ismail
Aug 24, 2016

Next number = prev number + summation of its digits.

24 = 21 + 2 +1

30 = 24 +2 +4

..........

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