2012 Category

2012: Problem 25

Solution: C

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2012: Problem 24

Solution: C

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2012: Problem 23

Solution: C

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2012: Problem 22

Solution: A

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2012: Problem 21

Solution: C

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2012: Problem 20

Solution: E

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2012: Problem 19

Solution: D

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2012: Problem 18

Solution: B

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2012: Problem 17

Solution: A

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2012: Problem 16

Solution: E

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