5677: (5 - 7 / 7 )× 6 = 242369: 方法一:[ (6 - 3) + 9 ] × 2 = 24 方法二:(9 / 3)× (2 + 6)= 24 方法三:(9 - 3 + 6 )× 2 = 24 方法四: (9 - 3 - 2)× 6 = 24
(5-7/7)*6=24((6-3)+9)*2=24
2,3,6,9(2+6)×(9/3)=245,6,7,7(5-7/7)*6=24