1+ 1=2, for example, a woman of 1 sits with another woman of 1 and there are two women.
1+ 1=3, for example, 1 male+1 girls 1 children, the result is equal to 3 people.
1+ 1=4, for example, 1 male+1 female two children, the result is equal to four people.
If it is binary, the result is10;
1 pot soup+1 rat shit = no soup!
1 sperm cell+1 egg cell = multicellular.
From the chemical point of view, it can be equal to 3, and C+02 = = = = CO2.
Mathematically,1+1= 2;
From the language point of view: two orioles singing green willows = a row of egrets flying to the sky;
From a physical point of view: a positron+a negative electron = 2 photons;
One carbon+one oxygen = one carbon monoxide;
A neutron becomes uranium 238 = nuclear explosion;