For the following BST, list the keys in the order they are visited by each of the following traversal methods: Solution Please follow the data : Inorder : This type of ordering follows : the left subtree, the current node, the right subtree. Preorder : The ordering follows : the current node, the left subtree, the right subtree. Postorder : The ordering follows : the left subtree, the right subtree, the current node. So the answer is, Pre order : 15 5 3 12 10 13 16 20 18 23 In order : 3 5 10 12 13 15 16 18 20 23 Post order : 3 10 13 12 5 18 23 20 16 15 Hope this is helpful. .