The mathematical operators: plus sign (+), minus sign (-), division sign (/), and multiplication sign (*), can be used to build complex formulas

A URL is a web address

Indicate whether the statement is true or false

The following items are inserted into a binary search tree: 8, 4, 3, 2, 5, 9, 6, 1, 7 . Which item is placed at a root?

a. 1 b. 4 c. 8 d. 9 e. none of the above