2. preorder: 1 2 4 7 8 3 5 6 9
Inorder: 7 4 8 2 1 5 3 6 9
Find postorder traversal
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Answer:
Proper order- 1 2 3 4 5 6 7 8 9
Improper order - 9 8 7 6 5 4 3 2 1
Hope it will help you
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