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Multiple choice:In a tree T with degree 4, if there are 20 nodes with degree 4, 10 nodes with degree 3, 1 node with degree 2 and 10 nodes with degree 1, then the number of leaf nodes of tree T is zero(

Luz5个月前 (05-10)题库46
In a tree T with degree 4, if there are 20 nodes with degree 4, 10 nodes with degree 3, 1 node with degree 2 and 10 nodes with degree 1, then the number of leaf nodes of tree T is ().




A.41
B.82
C.113
D.122


answer:B
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