1+1為甚麼不=3

From Peano's axiom, sequences of numbers are defined as 1,2,3,4,....
Then, successor of 0 is 1, successor of 1 is 2, ...
And, 0+1=successor of 0, 1+1=successor of 1, ...
Also, 0+2=successor of (successor of 0)=successor of (1)=2.

Therefore, 1+1 is defined as 2 but not 3 or 4.

1+1 等於 2 / 11/ 王 ..二.....3,4點都冇機會...

因為一加一等於二!!!!!!!!!!!!!!!!!!!!

因為一加一等於二！對的！

因為一加一等於二!!!!!!!!!!!!!!!!!!!!