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2、2、5、9算出24点

(9-2+5)*2=24

1: 5 * 7 -(2 + 9) 2: (5 * 7) - (2 + 9) 3: 5 * 7 - 2 - 9 4: (5 * 7) - 2 - 9 5: (5 * 7 - 2) - 9 6: ((5 * 7) - 2) - 9 7: 5 * 7 -(9 + 2) 8: (5 * 7) - (9 + 2) 9: 5 * 7 - 9 - 2 10: (5 * 7) - 9 - 2 11: (5 * 7 - 9) - 2 12: ((5 * 7) - 9) - 2 13: 7 * 5 -(2 + 9) 14: (7 * 5) - (2 + 9) 15: 7 * 5 - 2

(2-(5-9))*4((2-5)+9)*4(2*(5+9))-4((2+9)-5)*4(2+(9-5))*4(2*(9+5))-4(2+4)*(9-5)((5+9)*2)-4((9+2)-5)*4(9+(2-5))*4(9-(5-2))*4((9-5)+2)*4(9-5)*(2+4)((9+5)*2)-4(9-5)*(4+2)4*(2-(5-9))4*((2-5)+9)(4+2)*(9-5)4*((2+9)-5)4*(2+(9-5))4*((9+2)-5)4*(9+(2-5))4*(9-(5-2))4*((9-5)+2)

(5+9-2)乘以2=24

2*(9-2+5)=2*12=24

2的三次方加2+9+5=24

(9+5-2)*2=24.

按照24点游戏计算规则,此题无解.

5^2-9/9=24用了次方,可不可以啊不然就是无解.

二乘九等于十八,十八加五再加一等于24

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