(Q23880)

Statements

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12393-2
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12397
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Mathematics
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Mathematics
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19419
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12393-2/32df9d4fc1585554e81e8f78b69e1cca542aaa5e/32df9d4fc1585554e81e8f78b69e1cca542aaa5e.img
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2002
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12393
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