24点题目：使用数字 1 1 2 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74个解（使用交换律变换后算一个解）,
难度系数是1星
★☆☆☆☆☆☆☆【
最简单入门24点题目
】。
| 序号 |
题目：1,1,2,12 |
| 1 |
((12 × 2) × 1) × 1 |
| 2 |
((12 × 1) × 1) × 2 |
| 3 |
((12 × 2) − 1) + 1 |
| 4 |
((12 × 2) + 1) − 1 |
| 5 |
((12 × 1) × 2) × 1 |
| 6 |
((12 + 1) − 1) × 2 |
| 7 |
((12 − 1) + 1) × 2 |
| 8 |
(12 × (1 × 1)) × 2 |
| 9 |
(12 × (2 × 1)) × 1 |
| 10 |
(12 + (1 − 1)) × 2 |
| 11 |
(12 × 2) − (1 − 1) |
| 12 |
(12 × 1) × (2 × 1) |
| 13 |
(12 × 2) × (1 × 1) |
| 14 |
(12 − (1 − 1)) × 2 |
| 15 |
(12 × 2) + (1 − 1) |
| 16 |
12 × ((2 + 1) − 1) |
| 17 |
12 × (2 − (1 − 1)) |
| 18 |
12 × ((2 × 1) × 1) |
| 19 |
12 × (2 + (1 − 1)) |
| 20 |
12 × (1 + (2 − 1)) |
| 21 |
12 × (2 × (1 × 1)) |
| 22 |
((12 × 2) ÷ 1) ÷ 1 |
| 23 |
((12 ÷ 1) × 1) × 2 |
| 24 |
((12 × 2) ÷ 1) × 1 |
| 25 |
((12 × 1) ÷ 1) × 2 |
| 26 |
((12 ÷ 1) ÷ 1) × 2 |
| 27 |
((12 × 1) × 2) ÷ 1 |
| 28 |
((12 ÷ 1) × 2) ÷ 1 |
| 29 |
((12 × 2) × 1) ÷ 1 |
| 30 |
((12 ÷ 1) × 2) × 1 |
| 31 |
(12 × (1 ÷ 1)) × 2 |
| 32 |
(12 × 1) × (2 ÷ 1) |
| 33 |
(12 × (2 × 1)) ÷ 1 |
| 34 |
(12 ÷ (1 × 1)) × 2 |
| 35 |
(12 × 2) × (1 ÷ 1) |
| 36 |
(12 ÷ (1 ÷ 1)) × 2 |
| 37 |
(12 × 2) ÷ (1 × 1) |
| 38 |
(12 ÷ 1) × (2 ÷ 1) |
| 39 |
(12 × (2 ÷ 1)) × 1 |
| 40 |
(12 × (2 ÷ 1)) ÷ 1 |
| 41 |
(12 ÷ 1) × (2 × 1) |
| 42 |
(12 × 2) ÷ (1 ÷ 1) |
| 43 |
12 × ((2 ÷ 1) × 1) |
| 44 |
12 × (2 ÷ (1 ÷ 1)) |
| 45 |
12 × ((2 ÷ 1) ÷ 1) |
| 46 |
12 × (2 × (1 ÷ 1)) |
| 47 |
12 × ((2 × 1) ÷ 1) |
| 48 |
12 × (2 ÷ (1 × 1)) |
| 49 |
(2 ÷ 1) ÷ (1 ÷ 12) |
| 50 |
(2 ÷ (1 ÷ 12)) ÷ 1 |
| 51 |
(12 ÷ (1 ÷ 2)) ÷ 1 |
| 52 |
(12 ÷ (1 ÷ 2)) × 1 |
| 53 |
(2 ÷ (1 ÷ 12)) × 1 |
| 54 |
(1 ÷ (1 ÷ 12)) × 2 |
| 55 |
(12 ÷ 1) ÷ (1 ÷ 2) |
| 56 |
(2 × 1) ÷ (1 ÷ 12) |
| 57 |
(12 × 1) ÷ (1 ÷ 2) |
| 58 |
2 ÷ (1 ÷ (12 × 1)) |
| 59 |
2 ÷ (1 ÷ (12 ÷ 1)) |
| 60 |
1 ÷ (1 ÷ (12 × 2)) |
| 61 |
12 ÷ ((1 ÷ 2) ÷ 1) |
| 62 |
1 ÷ ((1 ÷ 2) ÷ 12) |
| 63 |
12 ÷ (1 ÷ (2 ÷ 1)) |
| 64 |
2 ÷ ((1 ÷ 12) ÷ 1) |
| 65 |
12 ÷ (1 × (1 ÷ 2)) |
| 66 |
2 ÷ ((1 × 1) ÷ 12) |
| 67 |
2 ÷ (1 × (1 ÷ 12)) |
| 68 |
1 ÷ ((1 ÷ 12) ÷ 2) |
| 69 |
2 ÷ ((1 ÷ 1) ÷ 12) |
| 70 |
12 ÷ ((1 × 1) ÷ 2) |
| 71 |
12 × (1 ÷ (1 ÷ 2)) |
| 72 |
12 ÷ ((1 ÷ 1) ÷ 2) |
| 73 |
12 ÷ (1 ÷ (2 × 1)) |
| 74 |
12 ÷ (1 − (1 ÷ 2)) |