24点 4 8 9 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 4 8 9 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 35 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 35 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:4,8,9,12 的解法 | |
|---|---|---|
| 1 | (9 × 8) − (12 × 4) | |
| 2 | (9 × (8 − 4)) − 12 | |
| 3 | ((9 × 8) × 4) ÷ 12 | |
| 4 | ((9 × 8) ÷ 12) × 4 | |
| 5 | ((9 × 4) × 8) ÷ 12 | |
| 6 | ((8 × 4) × 9) ÷ 12 | |
| 7 | (9 × 8) ÷ (12 ÷ 4) | |
| 8 | 8 × (9 ÷ (12 ÷ 4)) | |
| 9 | 8 × ((9 × 4) ÷ 12) | |
| 10 | (9 ÷ (12 ÷ 8)) × 4 | |
| 11 | (8 × (9 ÷ 12)) × 4 | |
| 12 | (8 × 4) × (9 ÷ 12) | |
| 13 | (9 × 4) × (8 ÷ 12) | |
| 14 | (9 × 4) ÷ (12 ÷ 8) | |
| 15 | (9 × 8) × (4 ÷ 12) | |
| 16 | (8 × 4) ÷ (12 ÷ 9) | |
| 17 | (9 × (8 ÷ 12)) × 4 | |
| 18 | (8 ÷ (12 ÷ 9)) × 4 | |
| 19 | 9 × (4 × (8 ÷ 12)) | |
| 20 | 8 ÷ (12 ÷ (9 × 4)) | |
| 21 | 9 × ((8 × 4) ÷ 12) | |
| 22 | 9 ÷ (12 ÷ (8 × 4)) | |
| 23 | 8 ÷ ((12 ÷ 4) ÷ 9) | |
| 24 | 9 ÷ ((12 ÷ 8) ÷ 4) | |
| 25 | 9 × (8 × (4 ÷ 12)) | |
| 26 | 8 × (4 × (9 ÷ 12)) | |
| 27 | 4 ÷ ((12 ÷ 9) ÷ 8) | |
| 28 | 9 × (4 ÷ (12 ÷ 8)) | |
| 29 | 9 × (8 ÷ (12 ÷ 4)) | |
| 30 | 4 ÷ ((12 ÷ 8) ÷ 9) | |
| 31 | 9 ÷ ((12 ÷ 4) ÷ 8) | |
| 32 | 4 ÷ (12 ÷ (9 × 8)) | |
| 33 | 8 × (4 ÷ (12 ÷ 9)) | |
| 34 | 8 ÷ ((12 ÷ 9) ÷ 4) | |
| 35 | 8 × (9 × (4 ÷ 12)) | |