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数学での集合の用語、要素、個数、全体集合、部分集合、共通部分、和集合などが表す意味とベン図にしたときのイメージ、集合の要素の個数の表し方を知ろう。出演者　湯浅弘一　庄司浩平　宮下結衣

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集合と要素の個数 | 数学A

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