It is simply 1+2 = 3
2
It is how 2 is defined so it is not an illusion.
Really it's 6 1/2
no if 1 plus 1 equals 2 then 2 plus 2 equals 4.
4
1 plus 3 equals four. You should really be asking better questions on Wikianswers.
(10 + 1) times 5 = 11 x 5 = 55
1^2 + 1^2 + 1^2 + 1^2 + 1^2 + 1^2 = 1 + 1 + 1 + 1 + 1 + 1 = 5
One plus one is two. It can be expressed mathematically as 1+1 = 2.
It equals 7
1/2 + 1/2 + 1/2 + 1/2 = 2 2 is four halves.
1+1 or 1 plus 1 is equal to 2.