1/2+1/6+1/12+1/20+1/30+1/42+1/56+1/72+1/90+1/110+1/132
=1/(1×2﹚+1/(2×3)+1/(3×4)+....+1/(11×12)
=1-1/2+1/2-1/3+1/3-1/4+....+1/11-1/12
=1-1/12
=11/12
这是我在静心思考后得出的结论,
如果能帮助到您,希望您不吝赐我一采纳~(满意回答)
如果不能请追问,我会尽全力帮您解决的~
答题不易,如果您有所不满愿意,请谅解~
原式=1-1/2+1/2-1/3+1/3-1/4-1/4-1/5+1/5-1/6+......+1/11-1/12
=1-1/12
=11/12