1/8+1/24+1/48+1/120,简便算法,哪位大侠帮帮忙!!急急
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发布时间:2024-09-26 05:14
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热心网友
时间:2024-10-07 05:17
1/8+1/24+1/48+1/80+1/120
=(1/2-1/4)/2+(1/4-1/6)/2+(1/6-1/8)/2+(1/8-1/10)/2+(1/10-1/12)/2
=[(1/2-1/4)+(1/4-1/6)+(1/6-1/8)+(1/8-1/10)+(1/10-1/12)]/2
=(1/2-1/12)/2、
=(5/12)/2、
=5/24
热心网友
时间:2024-10-07 05:20
1/8+1/24+1/48+1/80+1/120
=(1/2-1/4)/2+(1/4-1/6)/2+(1/6-1/8)/2+(1/8-1/10)/2+(1/10-1/12)/2
=[(1/2-1/4)+(1/4-1/6)+(1/6-1/8)+(1/8-1/10)+(1/10-1/12)]/2
=(1/2-1/12)/2、
=(5/12)/2、
=5/24