1/2009×2/2009×3/2009×4/2009×5/2009×······×2008/2009怎么算?
问题描述:
1/2009×2/2009×3/2009×4/2009×5/2009×······×2008/2009怎么算?
是乘法呀,最好有步骤
答
=2008!/2009^2008额..你是怎么算的呢2008!是2008阶乘