这么简单.提醒你:1/3=1/1+2,1/5=1/2+3…….到了最后,中间的数字全部抵消,就容易啦!
1/3 + 1/5 + 1/7 + 1/9 + 1/11 + 1/33 + 1/35 + 1/45 + 1/55 + 1
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相关问题
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1/3+1/5+1/7+1/9+1/11+1/33+1/35+1/45+1/55+1/77=?
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1*3/1+3*5/1+5*7/1+'''+31*33/1+33*35/1=?
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1*2*3+2*4*6+7*14*21+11*22*33/1*3*5+2*6*10+7*21*35+11*33*55
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1+3=4 1+3+5=9 1+3+5+7=16.1+3+5+.+19=( ) 1+3+5+.+33+35=( )
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计算:1/1x3+1/3x5+1/5x7+.+1/31x33+1/33x35,
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1/1*3*5+1/3*5*7+1/5*7*9+1/7*9*11+1/9*11*13+1/11*13*15怎么计算
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1+3 1+3+5 1+3+5+7 1+3+5+7+9 1+3+5+7+9+11 1+3+5+7+9+11+13 1+3
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1又1/3-1/7-11/105-5/24+33/56+4/45=?(45.85—28又1/5+26又1/4)*99.7
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(1\5+1\7+9\1+1\11)x(1\7+1\9+1\11+1\13)-(1\5+1\7+1\9+1\11+1\1
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1/3*7+1/7*11+1/11*15+...+1/55*59=?