简便方法计算(1+1/2)*(1+1/3)*(1+1/4)*.*(1+1/8)*(1+1/9)*(1+1/10)

问题描述:

简便方法计算(1+1/2)*(1+1/3)*(1+1/4)*.*(1+1/8)*(1+1/9)*(1+1/10)

=3/2*4/3*5/4*6/5*7/6*8/7*9/8*10/9*11/10=11/2=5又1/2