如何用1,2,6,7造二十四点?????????????????????????????????????????????????????????要好多种方法

显示全部楼层 · 2011-7-22 14:30:13

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千问 · 2011-7-22 14:30:13

6*(7-1-2)=24(6/2)*(7+1)=24(6+7-1)*2=24(6-2)*(7-1)=24...

千问 · 2011-7-22 14:30:13

6*(7-1-2)=6*4=24(6/2)*(7+1)=3*8=24(6+7-1)*2=12*2=24(6-2)*(7-1)=4*6=24...

千问 · 2011-7-22 14:30:13

1:(1 + 7) ÷ 2 × 62:((1 + 7) ÷ 2) × 63:(1 + 7) ÷ (2 ÷ 6)4:(1 - 7) × (2 - 6)5:(1 + 7) × 6 ÷ 26:((1 + 7) × 6) ÷ 27:(1 + 7) × (6 ÷ 2)8:(2 - 6) × (1 - 7)...