1/2X2/3X3/4X4/5...X2009/2010= 简算
问题描述:
1/2X2/3X3/4X4/5...X2009/2010= 简算
答
1/2X2/3X3/4X4/5...X2009/2010
=1*1/2*2*1/3*3*******2009*1/2010
=1/2010
像这样的问题自己多尝试下,下次才会的!