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1 The distinguished node at the beginning or top of a tree is called the

a head node

b root node

c leaf node

2 A node without children is called a

a single node

b leaf node

3 Each level k in a full binary tree contains

a 2k nodes

b 2k nodes

c 2k – 1 nodes

4 Assume that data are inserted into a binary search tree in the order D B

A C F E G. A preorder traversal would return these data in the order

a D B A C F E G

b A B C D E F G

5 Assume that data are inserted into a binary search tree in the order D B

A C F E G. An inorder traversal would return these data in the order

a D B A C F E G

b A B C D E F G

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