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1、在 1 和 2015 之间(包括 1 和 2015 在内)不能被 4、5、6 三个数任意一个数整除的数有_____个。
答案为
2、结点数为 5 的不同形态的二叉树一共有_____种。(结点数为 2 的二叉树一共有 2 种:一种是根结点和左儿子,另一种是根结点和右儿子。)
答案为