76. Which of the following is incorrect with respect to binary trees? a) Let T be a binary tree. For every k ≥ 0, there are no more than 2k nodes in level k b) Let T be a binary tree with λ levels. Then T has no more than 2λ – 1 nodes c) Let T be a binary tree with N nodes. Then the number of levels is at least ceil(log (N + 1)) d) Let T be a binary tree with N nodes. Then the number of levels is at least floor(log (N + 1))

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A: From the below array representation of a binary tree, find the father of node K?

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A: a.

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A: answer is

Q: what is the result of a post-order traversal? What is the height of node N?

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Q: A / | \\ BC D | E K 71 L M PQ XIX

A: i did the answer in step 2

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