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OpenStudy (anonymous):
Will someone help me work this out? I don't even know where to begin. A playground is being designed where children can interact with their friends in certain combinations. If there is 1 child, there can be 0 interactions. If there are 2 children, there can be only 1 interaction. If there are 3 children, there can be 5 interactions. If there are 4 children, there can be 14 interactions. Which recursive equation represents the pattern?
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OpenStudy (anonymous):
@sleepyjess @AJ01
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