Computer Science
# Trees

How many distinct binary search trees can be created out of \(4\) distinct trees?

Which of the following is true about Binary trees?

**Details and Assumptions**

A **full** binary tree is a tree in which every node other than the leaves has two children.

A **complete** binary tree is a binary tree in which every level, except possibly the last, is completely filled, and all nodes are as far left as possible.

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