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七年级数学问题
(-1+1/100)*(-1+1/101)*(-1+1/102)*...*(-1+1/2010)...
(-1+1/100)*(-1+1/101)*(-1+1/102)*...*(-1+1/2010)
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=(-99/100)*(-100/101)*(-101/102)*...*(-2009/2010)
=-99/2010
=-33/670
=-99/2010
=-33/670
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