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3357 算24点

【3,3,5,7】共有4种算法 [5×3-7]×3 2. 3×[3×5-7] 3. 3×[

(3*5-7)*3=24

3*((3*5)-7)

(3*5-7)*3=24; (5*3-7)*324.

【3,3,5,7】共有4种算法 [5×3-7]×3 2. 3×[3×5-7] 3. 3×[

(7×7-1)÷2=24 (2+3+3)×3=24

答案: 2569 9+5*6/2 2579 5*7-(2+9) 3478 8+(7-3)*

是把3357变成24?

(3x5-7)x3 =8x3 =24

3×(3×5-7)=24

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