What is the next number in the following sequence?
25 27 30 34 39 45 52 60 69 79 69 60 52 45 39 34 30 26 22 18 82 78 74 70 66 67 64 60 65 80 ?
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$\begingroup$ Could you please explain the downvotes? Thank you very much. I really want to improve the quality of my questions in the future :) $\endgroup$– NL628Commented Dec 29, 2017 at 7:32
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1$\begingroup$ You should try to provide at least little bit of context or a small hint, otherwise it forces people to resort to guesswork. I think you should also be more precise with the tags - is this really a strongly mathematics oriented puzzle? And do all of the other tags apply - they seem somewhat contradictory. $\endgroup$– ekhumoroCommented Dec 29, 2017 at 18:26
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$\begingroup$ You may want to read Number-Sequence Puzzles: What (Not) To Do? for some hints on why this is getting downvotes, and for some guidance on how to turn a number-sequence challenge into an interesting puzzle. $\endgroup$– Rubio ♦Commented Jan 1, 2018 at 18:26
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1 Answer
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Well as a partial, perhaps to help somebody:
The numbers going up to 79 are +2, +3... +10 and then reversed until 30.
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1$\begingroup$ Yeah, and then it's -4, -4, -4, -4, (reverse and +1), -4, -4, -4, -4, (reverse and +1), and some weird stuff after that. I can't see a repeating pattern throughout the sequence, though. $\endgroup$ Commented Dec 28, 2017 at 21:54
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$\begingroup$ @R.M Yeah, I saw that, but it was obvious and really odd and I don’t know what to do with it $\endgroup$– QuintecCommented Dec 28, 2017 at 23:47
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$\begingroup$ @thecoder16 I really apologize, but could you delete your answer so I can delete my question? It's totally okay if you don't want to. $\endgroup$– NL628Commented Jan 8, 2018 at 5:16
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$\begingroup$ @NL628 don’t mind too much, but what was your intended solution? I’m a little curious. $\endgroup$– QuintecCommented Jan 8, 2018 at 12:47
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$\begingroup$ And tbh it shouldn’t matter that much if the question is deleted or not because I don’t think it’s getting attention anymore $\endgroup$– QuintecCommented Jan 8, 2018 at 12:52