1/2+1\3+1\4+1\5+1\6简算
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1/2+1/3+1/4+1/5+1/6简算方法
巧算:(1+1/2+1/3+1/4+1/5)*(1/2+1/3+1/4+1/5+1/6)-(1+1/2+1/3+1/4+1/5+1/6)*(1/2+1/3+1/4+1/5)(1+1/2+1/3+1/4+1/5)*(1/2+1/3+1/4+1/5+1/6)-(1+1/2+1/3+1/4+1/5+1/6)*(1/2+1/3+1/4+1/5)=====
(1+1/3)*(1+1/4)*(1+1/5)*(1+1/6) 怎么简算?今天我就要用的!
简算:1/1*2+1/2*3+1/3*4+1/4*5+1/5*6
((1/2)-1)*((1/3)-1)*((1/4)-1)*((1/5)-1)*((1/6)-1)*((1/7)-1)*((1/8)-1)*((1/9)-1)*((1/10)-1)
1+1+1+1+11+-1-1-1-1-2-3-4-5-6等于
1-1/2+1/3-1/4+1/5-1/6+1/7.-1/50=?
(1+2/1+3/1+4/1)×(2/1+3/1+4/1+5/1)-(1+2/1+3/1+4/1+5/1)×(2/1+3/1+4/1)如何简算(或计算)求帮忙
1+1+1+1+1+1+1+1+1+2+5+4+8+3+6+2+1+4等于多少?
1-1/2+1/3-1/4+1/5-1/6+…+1/15=23*[1/( )+1/( )+1/( )+1/( )]
数学简算1/2*3+1/3*4+1/4*5+...1/99*100
1/(2*3)+1/(3*4)+1/(4*5)+.+1/(2008*2009)如何简算
2:5/4 9/25:3/5 2/3:5/6 1/5:1/20 5/9:1 2:3/8 3/4:4/3化简比
(1+1/2)*(1+1/4)*(1+1/6)*.*(1+1/20)*(1-1/3)*(1-1/5)+(1-1/7)*.*(1-1/2
数学简算题,一定要简算,5/6+1/2*5/1215*1/6-4/15
线性代数,行列式化简,1 4 1 0 2 5 -1 3 1 0 -3 1 0 5 5 1
脱式计算(能简算得要简算)1/2+1/3+1/4+1/5+1/6+1/7+1/8=( )
问大家一个简算题,1/1*2+1/2*3+1/3*4+1/4*5+.+1/199*200