利用加减乘除四种运算和括号如何由下列数计算得到24?(每个数只能用一次)(1)2;7;10;10;
2013-11-06
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1: (2 × (7 + 10)) - 10
2: 2 × (7 + 10) - 10
3: (2 - 10) × (7 - 10)
4: (2 × (10 + 7)) - 10
5: 2 × (10 + 7) - 10
6: (7 + 10) × 2 - 10
7: ((7 + 10) × 2) - 10
8: (7 - 10) × (2 - 10)
9: (10 - 2) × (10 - 7)
10: (10 + 7) × 2 - 10
11: ((10 + 7) × 2) - 10
12: (10 - 7) × (10 - 2)
望采纳 谢谢您。
2: 2 × (7 + 10) - 10
3: (2 - 10) × (7 - 10)
4: (2 × (10 + 7)) - 10
5: 2 × (10 + 7) - 10
6: (7 + 10) × 2 - 10
7: ((7 + 10) × 2) - 10
8: (7 - 10) × (2 - 10)
9: (10 - 2) × (10 - 7)
10: (10 + 7) × 2 - 10
11: ((10 + 7) × 2) - 10
12: (10 - 7) × (10 - 2)
望采纳 谢谢您。
2013-11-06
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(10-2)*(10-7)
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