Question: [Descrete structures] Define the function nin2c(T) that counts the number of internal nodes of T that have two children in acl2 notation. Then prove using

[Descrete structures] Define the function nin2c(T) that counts the number of internal nodes of T that have two children in acl2 notation. Then prove using Structural Induction on Trees that when T is a non-empty binary tree, the number of leaves in T is one more than the number of internal nodes with two children

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