()1()2()3()4()5()6()7()8()9()10=-10(括号里只能填+、-号)
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()1()2()3()4()5()6()7()8()9()10=-10(括号里只能填+、-号)
()1()2()3()4()5()6()7()8()9()10=-10(括号里只能填+、-号)
()1()2()3()4()5()6()7()8()9()10=-10(括号里只能填+、-号)
不可能
等号左边有奇数个奇数,因此+、-后结果还是奇数,不可能是偶数-10
9()2()7()8()()()()4()()9()6()1 3()5()()()()24()()8 5()()1()()8 9 4()1 6 7()()1()()3 6()()88()()()()2()3 6()5
()2()()()()()8()()()8()5()1()()()1 5 8()4 6 2()2()()1 8 3()()5()()()()4()()()()8()()6 2 5 ()()()15 9 2 4 1 6 7 3 8(
()3( ) × ( )6 ------------- 1 ( )( ) 6( ) ( ) 5------------- 8 ( )( ) ( )()3( ) × ( )4 ------------- 2 ( )2 8( )1 ( ) 0------------- 3 ( ) 1 ( ) 8
用下列各数组成比例 1,2,3,4,5,6,9,15( ):( )( ):( )( ):( )( ):( )( ):( )( ):( )( ):( )
请帮我做一下这道数独.5()()2()() 7 4()1()()()7 3 6 ()()2()9()4()3()()()5()4 3()()7 8 3()()()()9()()64 1()()2()()9()()
解九宫格火速求/518()2()()4() ()()3()8752()2()4()6189() 1()()9()3()62 43()6()2()8796()8()4()()5()4179()2()8()2913()6()()()5
(1) (2) (3) (4) (5)
1)2)3)4)5)
1) 2) 3) 4) 5)
() 4 () () 5 () ()()()() 6 9 () 7 1 ()()()2 ()() ()()() () 1 ()()()() 8 ()() 1 ()()() 7 () ()() 9 ()()()()() 3
帮我数独~~数独天才快来()5()()()()7()()()()4()()()()()88()3()5 1 ()()()()3() ()()7()()5()()()5 9 2()()()6()(
横竖9个方格填1-9数字不能重复1.(5)()()(2)()()(7)(4)() 2.(1)()()()(7)(3)(6)()() 3.(2)()(9)()(4)()(3)()() 4.()(5)()(4
横竖9个方格填1-9数字不能重复1.(5)()()(2)()()(7)(4)() 2.(1)()()()(7)(3)(6)()() 3.(2)()(9)()(4)()(3)()() 4.()(5)()(4
1()2()3()4()5()6()7()8()9=36填“+”,“-”
(1 ) -2*3*(-4) (2) -6*(-5)*(-7)
求九宫格答案2()()()9()()()4 ()8()76()()3()()()7()1()5()6 531()()()42()9()()8()56()7()7()()413()()()()9()8()25(
1+(-2)+3+(-4)+5+(-6)+.+(+99)+(-100)=?
计算:1+(-2)+(-3)+4+5+(-6)+(-7)+8+...+(-2009)+2010