作业帮1.5.8.9四个数加减乘除要等于24
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1.5.8.9四个数加减乘除要等于24
1.5.8.9四个数加减乘除要等于24
1.5.8.9四个数加减乘除要等于24
(9-5-1)*8=24;
24点这东西不必要动那么多脑子的。
http://www.dffy.com/tool/24.htm
电脑会帮你算。
你提的问题答案是
1: (1 - 9) × (5 - 8)
2: (5 - 8) × (1 - 9)
3: (8 - 5) × (9 - 1)
4: 8 × (9 - (1 + 5))
5: 8 × (9 - ...
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24点这东西不必要动那么多脑子的。
http://www.dffy.com/tool/24.htm
电脑会帮你算。
你提的问题答案是
1: (1 - 9) × (5 - 8)
2: (5 - 8) × (1 - 9)
3: (8 - 5) × (9 - 1)
4: 8 × (9 - (1 + 5))
5: 8 × (9 - 1 - 5)
6: 8 × ((9 - 1) - 5)
7: 8 × (9 - (5 + 1))
8: 8 × (9 - 5 - 1)
9: 8 × ((9 - 5) - 1)
10: (9 - (1 + 5)) × 8
11: (9 - 1 - 5) × 8
12: ((9 - 1) - 5) × 8
13: 9 ÷ (1 - 5 ÷ 8)
14: 9 ÷ (1 - (5 ÷ 8))
15: (9 - 1) × (8 - 5)
16: (9 - (5 + 1)) × 8
17: (9 - 5 - 1) × 8
18: ((9 - 5) - 1) × 8
可能有重复，因为是电脑算的
收起
1, 5, 8, 9的24点答案：
1: (1 - 9) × (5 - 8) =24
2: (5 - 8) × (1 - 9)
=24
3: (8 - 5) × (9 - 1)
=24
4: 8 × (9 - (1 + 5))
=24
5: ...
全部展开
1, 5, 8, 9的24点答案：
1: (1 - 9) × (5 - 8) =24
2: (5 - 8) × (1 - 9)
=24
3: (8 - 5) × (9 - 1)
=24
4: 8 × (9 - (1 + 5))
=24
5: 8 × (9 - 1 - 5)
=24
6: 8 × ((9 - 1) - 5)
=24
7: 8 × (9 - (5 + 1))
=24
8: 8 × (9 - 5 - 1)
=24
9: 8 × ((9 - 5) - 1)
=24
10: (9 - (1 + 5)) × 8
=24
11: (9 - 1 - 5) × 8
=24
12: ((9 - 1) - 5) × 8
=24
13: 9 ÷ (1 - 5 ÷ 8)
=24
14: 9 ÷ (1 - (5 ÷ 8))
=24
15: (9 - 1) × (8 - 5)
=24
16: (9 - (5 + 1)) × 8
=24
17: (9 - 5 - 1) × 8
=24
18: ((9 - 5) - 1) × 8
=24
收起
（9-5-1）*8=24
[9-5-1]*8
8*[9-(5+1)]=24, 9/1-5/8=9/3/8=3*8=24