1 3 9 10四个数组成24?

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13910四个数组成24?13910四个数组成24?13910四个数组成24?1:(1+10)×3-92:((1+10)×3)-93:(3×(1+10))-94:3×(1+10)-95:(3×(10+

1 3 9 10四个数组成24?
1 3 9 10四个数组成24?

1 3 9 10四个数组成24?
1:(1 + 10) × 3 - 9
2:((1 + 10) × 3) - 9
3:(3 × (1 + 10)) - 9
4:3 × (1 + 10) - 9
5:(3 × (10 + 1)) - 9
6:3 × (10 + 1) - 9
7:(10 + 1) × 3 - 9
8:((10 + 1) × 3) - 9

1: (1 + 10) × 3 - 9
2: ((1 + 10) × 3) - 9
3: (3 × (1 + 10)) - 9
4: 3 × (1 + 10) - 9
5: (3 × (10 + 1)) - 9
6: 3 × (10 + 1) - 9
7: (10 + 1) × 3 - 9
8: ((10 + 1) × 3) -9
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10+1=11 ,11x3= 33,,3-9=24.
求采纳~