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问题:

若一棵二叉树中,度为2的结点数为9,则该二叉树的叶结点数为A.10B.11C.12D.不确定

若一棵二叉树中,度为2的结点数为9,则该二叉树的叶结点数为

A.10

B.11

C.12

D.不确定


  参考答案

正确答案:A

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