A binary tree whose every node has either zero or two children is called?

The memory address of the first element of an array is called?

The memory address of fifth element of an array can be calculated by the formula?

Which of the following data structures are indexed structures?

What is the depth of a complete binary tree?

When representing any algebraic expression E which uses only binary operations in a 2-tree?

How a binary tree can easily be converted into q 2-tree?