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This appears to be a declining arithmetic series. If it is, the next term is 5, because each term is 3 less than the preceding term.

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The 'N'th term is: [ 23 - 3N ].

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Azaiqi Villarosa

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20,17,14
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This is really good

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Q: Nth term of the sequence 20 17 14 11 8?
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