用2.3.7.9.四个数凑24点（要3个答案）

lovemeimei2022-10-04 11:39:540条回答

已提交，审核后显示！提交回复

用2.3.7.9通过加,减,乘,除算24点（每个数只能用一次）. 用2.3.7.9通过加,减,乘,除算24点（每个数只能用一次）. 全题：现有有理数2,3,7,9,将这4个数（每个数只能用一次）进行加,减,乘,除四则运算是其结果等于24,至少三条.如果好会加风的 chencoco20071年前4: tcchenhaotc 共回答了19个问题 | 采纳率94.7%

1:2 × (3 × 7 - 9)
2:2 × ((3 × 7) - 9)
3:2 × (7 × 3 - 9)
4:2 × ((7 × 3) - 9)
5:3 ÷ 2 ×(7 + 9)
6:(3 ÷ 2) × (7 + 9)
7:3 ÷ (2 ÷ (7 + 9))
8:3 ÷ 2 ×(9 + 7)
9:(3 ÷ 2) × (9 + 7)
10:3 ÷ (2 ÷ (9 + 7))
11:(3 × (7 - 2)) + 9
12:3 × (7 - 2) + 9
13:(3 × (7 + 9)) ÷ 2
14:3 × (7 + 9) ÷ 2
15:3 × ((7 + 9) ÷ 2)
16:(3 × 7 - 9) × 2
17:((3 × 7) - 9) × 2
18:(3 × (9 + 7)) ÷ 2
19:3 × (9 + 7) ÷ 2
20:3 × ((9 + 7) ÷ 2)
21:(7 - 2) × 3 + 9
22:((7 - 2) × 3) + 9
23:(7 × 3 - 9) × 2
24:((7 × 3) - 9) × 2
25:(7 + 9) ÷ 2 × 3
26:((7 + 9) ÷ 2) × 3
27:(7 + 9) ÷ (2 ÷ 3)
28:(7 + 9) × 3 ÷ 2
29:((7 + 9) × 3) ÷ 2
30:(7 + 9) × (3 ÷ 2)
31:9 - (2 - 7) × 3
32:9 - ((2 - 7) × 3)
33:9 - (3 × (2 - 7))
34:9 - 3 ×(2 - 7)
35:9 + (3 × (7 - 2))
36:9 + 3 ×(7 - 2)
37:9 + (7 - 2) × 3
38:9 + ((7 - 2) × 3)
39:(9 + 7) ÷ 2 × 3
40:((9 + 7) ÷ 2) × 3
41:(9 + 7) ÷ (2 ÷ 3)
42:(9 + 7) × 3 ÷ 2
43:((9 + 7) × 3) ÷ 2
44:(9 + 7) × (3 ÷ 2)

1年前查看全部

9×9的数独258.7.3..85....5...6...9..1.8....41.6....2.3.7.9 Magicdesign1年前1: alt___F4 共回答了21个问题 | 采纳率76.2%

方案非常多,给你前10个
Case:1
258619347
637254981
941378526
375821694
862495713
419763852
594136278
126987435
783542169
Case:2
258619347
637452981
941378526
375821694
862594713
419763852
594136278
126987435
783245169
Case:3
258619347
637245981
941378526
375821694
862594713
419763852
594136278
126987435
783452169
Case:4
258619347
637542981
941378526
375821694
862495713
419763852
594136278
126987435
783254169
Case:5
258619347
637254981
941378526
375841692
862593714
419762853
594136278
126987435
783425169
Case:6
258619347
637425981
941378526
375841692
862593714
419762853
594136278
126987435
783254169
Case:7
258961347
637452981
941378526
375814692
862593714
419627853
594136278
126789435
783245169
Case:8
258961347
637245981
941378526
375814692
862593714
419627853
594136278
126789435
783452169
Case:9
258649317
637251984
941378526
375814692
862593741
419762853
594136278
126987435
783425169
Case:10
258964317
637215984
941378526
375841692
862593741
419627853
594136278
126789435
783452169

1年前查看全部

用2.3.7.9这四个数字组字,组成两个两位数的质数,使它们的差是11的4倍 诸葛19811年前3: 东北丑男共回答了19个问题 | 采纳率94.7%

73和29

1年前查看全部