(2009/1-1)×(2008/1-1)×(2007/1-1)×.×(1001/1-1)×(1000/1-1)
(2009/1-1)×(2008/1-1)×(2007/1-1)×.×(1001/1-1)×(1000/1-1)
(1/2008-1)*(1/2007-1)*(2006-1).(1/1001-1)*(1/1000-1)
(1-1/2008)×(1-1/2007)×……×(1-1/1001)×(1-1/1000)
(2010/1-1)x(2009/1-1)x(2008/1-1).(1001/1-1)x(1000/1-1)=?
计算(1/2009-1)*(1/2008-1)*(1/2007-1)*……*(1/1000-1)
计算(1/2009-1)*(1/2008-1)*(1/2007-1)*.*(1/1000-1)
(1/2008-1)(1/2007-1)(1/2006-1)……(1/1001-1)(1/1000-1)
计算(2009/1-1)*(2008/1-1)*(207/1-1)*...*(1001/1-1)*(1000/1-1)
(1/2010-1)*(1/2009-1)*(1/2008-1)*…(1/1001-1)*(1/1000-1)=?1/1
简算:(2009+1/2007)*1/2008
2010分之1-1)×(2009分之1-1)×(2008分之1-1).(1001分之-1)×(1000分之1-1)
简便运算:(1-2008分之1)×(1-2007分之1)×……(1-1001分之1)×(1-1000分之1)