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三年级数学下册八数学广角_搭配第3课时简单的组合习题课件新人教版.ppt

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6,3,2,1,3,2,1,6,答:种:AB、AC、AD、BC、BD、CD.,答:种,分别是角,元角,元角,元角,元角,元.,答:共有种选法.,答:选苹果和种其他水果,共有种选法;把选出的 种水果分别送给个好朋友,共有种送法.,答:一共有种选法.,答:图中一共有个平行四边形.,

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