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Popular Examples
13 choose 2
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13c2
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std 9,9,9,9,9,9,9
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std\:9,9,9,9,9,9,9
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std 21,31,36,45,49,58,61,63,64,65,66,68,71,73,74,78,81,92
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std\:21,31,36,45,49,58,61,63,64,65,66,68,71,73,74,78,81,92
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std 7,15,-7,-4,-1
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std\:7,15,-7,-4,-1
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6 choose 4
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6c4
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