1/3,1/7,7/9,1/31,19/45 ( )数字推理同上,1/3,1/7,7/9,1/31,19/45 ( ) 谁能做出来,
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1/3,1/7,7/9,1/31,19/45 ( )数字推理同上,1/3,1/7,7/9,1/31,19/45 ( ) 谁能做出来,
1/3,1/7,7/9,1/31,19/45 ( )数字推理
同上,1/3,1/7,7/9,1/31,19/45 ( ) 谁能做出来,
1/3,1/7,7/9,1/31,19/45 ( )数字推理同上,1/3,1/7,7/9,1/31,19/45 ( ) 谁能做出来,
将每个数的分子与分母相加为4,8,16,32,64的等比数列 答案是63/65
1/3,1/7,7/9,1/31,19/45 ( )数字推理同上,1/3,1/7,7/9,1/31,19/45 ( ) 谁能做出来,
1*3+3*5+5*7+7*9+,+29*31
1+3+5+7+9+11+13+15+17+19+21+23+25+27+29+31
1/1*3+1/3*5+1/5*7+1/7*9+...1/17*19=
计算1/(1×3)+1/(3×5)+1/(5×7)+1/(7×9)+.+1/(19×21)
-1/1*3-1/3*5-1/5*7-1/7*9-^-1/19*21
1,3,7,15,31,()
1,3,7,15,31,( ),( ).
1,2,3,3,7,5,15,9,31,( )
1至9九宫格题目7----6--4-3---7-1----31----64--8-7----7-538----8-7--31----49----8-5---6-9--1----3
(1+3)/1+(3+5)/1+(5+7)/1+(7+9)/1.+(17+19/1+(19+21)/1=?
罗伯法 一个四阶幻方,1,3,5,7,9,11,13,15,17,19,21,23,25,27,29,31
第一个 -1,1,7,17,31,(),71第二个 3/7,1/2,7/13,9/16,()
1/1*3+1/3*5+1/5*7+1/7*9+.1/19*21怎么算
1+3+5+9+7+11+13+15+17+19
1+3+5+7+9+.+19=多少?急
又一道,求通项公式~-1,7,-13,19,-25,31
1又3/14-19/21 1.4-4/9-2/5+2/3 1/2+2/5-3/10+0.6 1/2+3/4+7/8+15/16+31/32+63/641又3/14-19/21 1.4-4/9-2/5+2/3 1/2+2/5-3/10+0.6 1/2+3/4+7/8+15/16+31/32+63/64