24点题目：使用数字 2 3 12 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24个解（使用交换律变换后算一个解）,
难度系数是3星
★★★☆☆☆☆☆【
中等偏易24点题目
】。
| 序号 |
题目：2,3,12,12 |
| 1 |
(12 + 12) × (3 − 2) |
| 2 |
12 + (12 × (3 − 2)) |
| 3 |
((12 × 3) + 12) ÷ 2 |
| 4 |
((12 × 12) ÷ 3) ÷ 2 |
| 5 |
((12 × 12) ÷ 2) ÷ 3 |
| 6 |
(12 + 12) ÷ (3 − 2) |
| 7 |
(12 × 12) ÷ (3 × 2) |
| 8 |
(12 ÷ 2) × (12 ÷ 3) |
| 9 |
(12 × (12 ÷ 3)) ÷ 2 |
| 10 |
(12 × (12 ÷ 2)) ÷ 3 |
| 11 |
12 × ((12 ÷ 3) ÷ 2) |
| 12 |
12 × ((12 ÷ 2) ÷ 3) |
| 13 |
12 × ((12 ÷ 3) − 2) |
| 14 |
12 × (12 ÷ (3 × 2)) |
| 15 |
12 + (12 ÷ (3 − 2)) |
| 16 |
(12 ÷ 3) ÷ (2 ÷ 12) |
| 17 |
(12 ÷ (2 ÷ 12)) ÷ 3 |
| 18 |
(12 ÷ (3 ÷ 12)) ÷ 2 |
| 19 |
(12 ÷ 2) ÷ (3 ÷ 12) |
| 20 |
12 ÷ (3 × (2 ÷ 12)) |
| 21 |
12 ÷ (3 ÷ (12 ÷ 2)) |
| 22 |
12 ÷ (2 × (3 ÷ 12)) |
| 23 |
12 ÷ ((3 × 2) ÷ 12) |
| 24 |
12 ÷ (2 ÷ (12 ÷ 3)) |