(1+1/2)*(1+1/3)*(1+1/4)*.(1+1/10)=?

问题描述:

(1+1/2)*(1+1/3)*(1+1/4)*.(1+1/10)=?
怎么做?(⊙_⊙)?谢谢O(∩_∩)O》

3/2 * 4/3 * 5/4 *.*11/10=11/2