2004
(1/2012-1)*(1/2011-1)*(1/2010-1)*……*(1/1001-1)*(1/1000-1)
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相关问题
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(2012/1-1)×(2011/1-1)×(2010/1-1)×……×(1001/1-1)×(1000/1-1)
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(2012/1-1)×(2011/1-1)×(2010/1-1)×……×(1001/1-1)×(1000/1-1) 这道
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(1/2013-1)乘(1/2012-1)乘(1/2011-1)乘…(1/1001-1)乘(1/1000-1)
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(1/2010-1)*(1/2009-1)*(1/2008-1)*...*(1/1001-1)*(1/1000-1)
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|1/2009-1/2010|+|1/2010-1/2011|+|1/2011-1/2012|
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|1∕2009-1∕2010|+|1∕2010﹣1∕2011|﹢|1∕2011-1∕2012|=
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|1/2013-1/2012|+|1/2012-1/2011|+|1/2011-1/2010|
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|1/2013-1/2012|+|1/2012-1/2011|+|1/2011+1/2010|
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1/2013-1/2012|+|1/2012-1/2011|+|1/2011+1/2010|,
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| 1∕1001-1∕1000|+|1/1002-1/1001|=?