Exam-style question
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Which statement correctly describes a binary tree?.
- A.It is an unrooted graph that may contain cycles
- B.It is a rooted tree in which each node has at most two children
- C.It is a tree in which every node has exactly two parents
- D.It is a directed graph with no connected vertices
Model answer
What a good answer should say
- It is a rooted tree in which each node has at most two children
Explanation
Why this works
A binary tree is specifically a rooted tree with a maximum of two children per node.
Common mistake
No common mistake is linked to this question yet.