第一种:(2 )*(3 )=(6 )
( 7)+( 1)=(8 )
( 4)+(5 )=(9 )
第2种:(6 )/(2 )=(3 )
(5 )+(4 )=(9 )
(7 )+(1)=(8 )
第3种:( 9)-(4 )=(5 )
(2 )*( 3)=(6 )
( 8)-(1 )=(7 )
以此类推
第一种:(2 )*(3 )=(6 )
( 7)+( 1)=(8 )
( 4)+(5 )=(9 )
第2种:(6 )/(2 )=(3 )
(5 )+(4 )=(9 )
(7 )+(1)=(8 )
第3种:( 9)-(4 )=(5 )
(2 )*( 3)=(6 )
( 8)-(1 )=(7 )
以此类推