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question #25
25. Postorder traversal of a given binary search tree T produces following sequence of keys : 3, 5, 7, 9, 4, 17, 16, 20, 18, 15, 14 Which one of the following sequences of keys can be the result of an in-order traversal of the tree T ?

D
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NET Paper 2 - Computer Science- November 2017