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In a crystal maze a set of 25 islands are connected through bridges.Danny, a participant walked onto every island crossing each bridge exactly once.In this process he visited an island Named Pentagon five times. 1.How many bridges are there to pentagon if danny neither started nor ended at Pentagon? 2.How many bridges are there to Pentagon if Danny started at Pentagon but did not end there? 3.How many bridges are there to Pentagon if Danny started and ended at Pentagon?

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