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Popular Examples
19 choose 2
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19C2
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arithmeticmean 10,9,8,7,8,6,10,6
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arithmeticmean\:10,9,8,7,8,6,10,6
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std 254,281,192,260,212,179,225,179
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std\:254,281,192,260,212,179,225,179
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std 8,16,24,32,40
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std\:8,16,24,32,40
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20 choose 2
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20C2
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