Except equal to 2, 1+ 1 has different answers in different situations:

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. For example, Goldbach conjecture.

5. When speaking English. If ten thousand plus ten thousand equals the earth.

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

7. When turning sharply. For example, 1 plus 1, the answer is 1 1.

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

9. When changing units. For example, 1 hand plus 1 hand equals 1 hand.

10, when actually needed. For example, a foot of cloth plus a catty of rice equals a bag of rice.

1 1, intelligence test. For example, a drop of water plus a drop of water equals a drop of water.

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

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

14, when 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 and so on.