Artificial intelligence
An algorithm A is admissible if ___________

It returns more solutions, but not an optimal one
It guarantees to return more optimal solutions
It is not guaranteed to return an optimal solution when one exists
It is guaranteed to return an optimal solution when one exists

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Artificial intelligence
A heuristic is a way of trying __________

To compare two nodes in a search tree to see if one is better than the other is
To search and measure how far a node in a search tree seems to be from a goal
To discover something or an idea embedded in a program
All of the mentioned

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