Mathematics, 08.07.2019 19:00, omar2334

If there is 1 child, there can be 0 interactions. if there are 2 children, there can be 3 interactions. if there are 3 children, there can be 9 interactions. if there are 4 children, there can be 18 interactions. how many interactions will there be for 9 children? a. 135 b. 84 c. 93 d. 108

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If there is 1 child, there can be 0 interactions. if there are 2 children, there can be 3 interacti...