1, Boolean algebra. 1+ 1= 1;

2, in binary. 1+ 1= 10;

3. Lickitung replied. For example, 1 plus 1 equals love;

4. As a representative. Such as Goldbach conjecture;

5. When playing word games. For example, 1 clip 1, the answer is zero;

6. When turning sharply. For example, 1 plus 1, the answer is11;

7. The unit is different. For example, 1 hour plus 1 minute equals 6 1 minute;

8. When changing units. For example, 1 hand plus 1 hand equals 1 hand;

9. When it is really needed. For example, a foot of cloth plus a catty of rice equals a bag of rice;

10, intelligence test. For example, a drop of water plus a drop of water equals a drop of water;

1 1, under special circumstances. For example, a man plus a pregnant woman equals three people;

12, funny answer. For example, a cat plus a mouse equals a complete cat;

13, doing crossword puzzles. If you add 1, the answer is ten; One plus one, the answers are Wang, Feng, 30, etc. One plus one equals, and the answers are Tian, you, A, Shen, etc.

14、……