Crux Mathematicorum 2012.
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Problem 3690
Problem 3693
Problem 3701
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Problem 3709
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Problem 3750
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Problem 3755
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Problem 3760
Problem 3761
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Problem 3763
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Problem 3770
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Problem 3774
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Problem 3780
Problem 3781
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Problem 3784
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Problem 3790
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Problem 3798
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