The pre-order traversal of a binary search tree is 15, 10, 12, 11, 20, – McqOptions

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1.	The pre-order traversal of a binary search tree is 15, 10, 12, 11, 20, 18, 16, 19.Which one of the following is the post order traversal of the tree?
A.	10, 11, 12, 15, 16, 18, 19, 20
B.	11, 12, 10, 16, 19, 18, 20, 15
C.	20, 19, 18, 16, 15, 12, 11, 10
D.	19, 16, 18, 20, 11, 120, 10, 15
Answer» C. 20, 19, 18, 16, 15, 12, 11, 10

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