Mathematics, 01.10.2019 05:20 tallen21

Aplayground is being designed where children can interact with their friends in certain
combinations.
if there is 1 child, there can be o interactions.
if there are 2 children, there can be 1 interactions.
if there are 3 children, there can be 4 interactions.
if there are 4 children, there can be 9 interactions.
how many interactions will there be for 6 children?

Answers: 3

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Aplayground is being designed where children can interact with their friends in certain
combin...