40, 40, 31, 31, 22, 22, 13, ... choose which pair of numbers comes next?

Asked Sep 07, 2023 Modified Sep 07, 2023 Viewed 0 times
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asked Sep 07, 2023 at 11:12
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This is a subtraction series with repetition. Each number repeats itself and then decreases by 9.
answered Sep 07, 2023 at 11:12

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