4.9.9.12算24点
问题描述:
4.9.9.12算24点
答
4*((9+9)-12)4*(9+(9-12))4*(9-(12-9))4*((9-12)+9)4*((9+9)-12)4*(9+(9-12))4*(9-(12-9))4*((9-12)+9)(4-(12/9))*9(4-(12/9))*99*(4-(12/9))((9+9)-12)*4(9+(9-12))*4(9-(12-9))*4((9-12)+9)*49*(4-(12/9))((9+9)-1...