Choose the correct answers.

Subject: Artificial Intelligence

*Consider a tree with a root called (1) and a left subtree called (2) and a right subtree called (3). The node (2) has two subtrees which are called (4) and (6), while node (3) has two subtrees which are called (5) and (7). This tree could be represented using principal functor as follow: a. 102(4,6),3(5.7)) b. (3(5,7), 2(4,6)) C. 1(2(5,7),3(4,6)) d. 1(3(4,6) 2(5,7)) e. None of the available answer * The set membership relation, in( V, W), means that the Tree W have the member V if: a. The root of Wis V. b. V is in the left subtree of W. C. X is in the right subtree of W. d. All the above answrs *A binary tree will be called a binary dictionary if: A. an-empty tree t( Left, X, Right) is ordered from left to right. B. a non-empty tree t( Right, X, Left) is ordered from right to left C. a non-empty tree t( Left, X, Right) is ordered from left to right D. an-empty tree (Right, X, Left) is ordered from right to left E. none of the available answer * There are a variety of tree structures that make easy and efficient utilization of the set membership relation. However, this tree structure must imply: a. The subtrees of the tree structures can be anything, but the root have to be binary trees again. b. The subtrees of the tree structures can be null, but the root have to be binary trees again. C. The root of the tree structures can be anything, but the subtrees have to be null. d. The root of the tree structures can be anything, but the subtrees have to be binary trees again. e. All the available answers