2/1 2/1 2/1 2/1 2/1 2/1 2/1=10填加减乘除括号

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2/12/12/12/12/12/12/1=10填加减乘除括号2/12/12/12/12/12/12/1=10填加减乘除括号2/12/12/12/12/12/12/1=10填加减乘除括号2/1+2/1

2/1 2/1 2/1 2/1 2/1 2/1 2/1=10填加减乘除括号
2/1 2/1 2/1 2/1 2/1 2/1 2/1=10填加减乘除括号

2/1 2/1 2/1 2/1 2/1 2/1 2/1=10填加减乘除括号
2/1+ 2/1 +2/1 +2/1+ 2/1 +2/1- 2/1=10

(2+2)/2+2*2+2+2=10

1 2 1 2 () () ()() 1+1/2^2 1+2+1+2+1+2+1+2+1+2+1+2+1+2 =( )*( ) =() (2-×)(1-×)=×-2-2(2-×)(1-×) (1-1/2^2)(1-1/3^2)(1-1/4^2).(1-1/2009^2), 1,2, 1/2 1、2、 1 2 1+2? 1、2 1,2, 1 2 1,2, 1 2 #1#2 1,2, 2,1