(1/3+1/6+1/9+1/12+1/24)/(1/2+1/4+1/6+1/8+1/16)
问题描述:
(1/3+1/6+1/9+1/12+1/24)/(1/2+1/4+1/6+1/8+1/16)
答
=1/3×(1+1/2+1/3+1/4+1/8)/[1/2×(1+1/2+1/3+1/4+1/8)]
=(1/3)/(1/2)
=2/3