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4. Answer the following. a. What can you say about a vertex in a rooted tree that has no ancestor? b. What can you

4. Answer the following. a. What can you say about a vertex in a rooted tree that has no ancestor? b. What can you say about a vertex in a rooted tree that has no descendants? 5. Find a spanning tree for the following. a SO g h 1 i k Ja 1 b d

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