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What number should come next in the following sequence 18211720161915?
Wiki User
∙ 2013-05-16 07:13:28
18,21,17,20,16,19,15,18
Wiki User
∙ 2013-05-16 07:13:28
Anonymous
14. the way you get it is to add three, subtract for, and keep repeating that until the end.
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