24点 1 5 7 12 解题详情
24点在线计算 · 全部题目与解法
24点题目:使用数字 1 5 7 12,利用加减乘除、括号算出24。数字顺序可以任意调换,下面列出所有可行算式。
本题共有 48 个解(使用交换律变换后算一个解),难度系数 ★★★☆☆☆☆☆ 【 中等偏易24点题目 】
本题共有 48 个解(使用交换律变换后算一个解),难度系数 ★★★☆☆☆☆☆ 【 中等偏易24点题目 】
| 序号 | 题目:1,5,7,12 的解法 | |
|---|---|---|
| 1 | ((7 × 5) + 1) − 12 | |
| 2 | ((12 + 5) + 7) × 1 | |
| 3 | ((12 + 7) × 1) + 5 | |
| 4 | ((12 × 1) + 5) + 7 | |
| 5 | ((12 × 1) + 7) + 5 | |
| 6 | ((7 × 5) − 12) + 1 | |
| 7 | ((12 + 7) + 5) × 1 | |
| 8 | ((12 + 5) × 1) + 7 | |
| 9 | (7 + 5) + (12 × 1) | |
| 10 | (12 + (5 × 1)) + 7 | |
| 11 | (12 × 1) × (7 − 5) | |
| 12 | (12 × 1) + (7 + 5) | |
| 13 | (5 × (12 − 7)) − 1 | |
| 14 | (12 + 5) + (7 × 1) | |
| 15 | (12 × (7 − 5)) × 1 | |
| 16 | (12 + 7) + (5 × 1) | |
| 17 | (12 + (7 + 5)) × 1 | |
| 18 | (12 + (7 × 1)) + 5 | |
| 19 | (7 × 5) − (12 − 1) | |
| 20 | 12 × ((7 − 5) × 1) | |
| 21 | 12 + (7 + (5 × 1)) | |
| 22 | 12 + ((7 × 1) + 5) | |
| 23 | 12 + ((7 + 5) × 1) | |
| 24 | 12 × ((7 × 1) − 5) | |
| 25 | 12 × (7 − (5 × 1)) | |
| 26 | ((12 + 7) ÷ 1) + 5 | |
| 27 | ((12 ÷ 1) + 5) + 7 | |
| 28 | ((12 + 5) ÷ 1) + 7 | |
| 29 | ((12 + 7) + 5) ÷ 1 | |
| 30 | ((12 + 5) + 7) ÷ 1 | |
| 31 | ((12 ÷ 1) + 7) + 5 | |
| 32 | (12 ÷ 1) + (7 + 5) | |
| 33 | (12 + (5 ÷ 1)) + 7 | |
| 34 | (12 ÷ 1) × (7 − 5) | |
| 35 | (12 + (7 + 5)) ÷ 1 | |
| 36 | (7 + 5) + (12 ÷ 1) | |
| 37 | (12 × (7 − 5)) ÷ 1 | |
| 38 | (12 + 7) + (5 ÷ 1) | |
| 39 | (12 + 5) + (7 ÷ 1) | |
| 40 | (12 + (7 ÷ 1)) + 5 | |
| 41 | 12 × ((7 ÷ 1) − 5) | |
| 42 | 12 + (7 + (5 ÷ 1)) | |
| 43 | 12 × (7 − (5 ÷ 1)) | |
| 44 | 12 + ((7 + 5) ÷ 1) | |
| 45 | 12 × ((7 − 5) ÷ 1) | |
| 46 | 12 + ((7 ÷ 1) + 5) | |
| 47 | (7 − 5) ÷ (1 ÷ 12) | |
| 48 | 12 ÷ (1 ÷ (7 − 5)) | |