-5
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11 31 51 44 64

Possible answers are:

  1. 74
  2. 59
  3. 93
  4. 67
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3
  • $\begingroup$ I think this question is a little unfitting for this community, in terms of its difficulty. $\endgroup$ – cppcoder Jul 31 '17 at 21:19
  • 2
    $\begingroup$ You may want to review Number Sequence Puzzles: What (Not) To Do, since this question seems to match the "what not to do" in that post. $\endgroup$ – GentlePurpleRain Jul 31 '17 at 21:46
  • $\begingroup$ I hate it when new users get such an unfriendly welcome, but what else can we do? Please, OP, don't be annoyed, rather, carry on your adventure on this site! $\endgroup$ – William Nathanael Aug 1 '17 at 15:06
3
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It's

93

Because

sum of the digits of each number is 2 more than the sum of the digits of the number before that.

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1
  • $\begingroup$ Huh, that's such a poorly defined "pattern"... $\endgroup$ – greenturtle3141 Aug 1 '17 at 3:07

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