
计算:|1/3-1/2|+|1/4-1/3|+|1/5-1/4|+…+|1/100-1/99|
计算:|1/3-1/2|+|1/4-1/3|+|1/5-1/4|+…+|1/100-1/99|...
计算:|1/3-1/2|+|1/4-1/3|+|1/5-1/4|+…+|1/100-1/99|
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1/6+1/12+1/20+…+1/9900
=1/2-1/3+1/3-1/4+1/4-1/5+……+1/99-1/100
=49/100
=1/2-1/3+1/3-1/4+1/4-1/5+……+1/99-1/100
=49/100
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