2013 Category

2013: Problem 25

Solution: D

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2013: Problems 23-24

Solution: E Solution: A

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2013: Problem 22

Solution: D

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2013: Problems 19-21

Solution: B Solution: E Solution: A

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2013: Problem 18

Solution: E

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2013: Problem 17

Solution: B

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2013: Problem 16

Solution: D

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2013: Problem 15

Solution: D

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2013: Problem 14

Solution: B

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2013: Problem 13

Solution: A

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