prove 2+2=4?

Answer 1

well dear Bunty;

look at this may be u get ur answer.
http://us.metamath.org/mpegif/mmset.html

Good Luck

Answer 2

2+2
=(1+1)+(1+1)
=1+1+1+1
=4.

Answer 3

1+1=2
1+1+1+1=4
Hence,
2+2=4

Answer 4

2+2=4
2/4=2
4-2=2
2x2=4

Answer 5

well 1+1=2 so1+1+1+1=2+2=4

Answer 6

You have 2 apples, i give you 2 apples now you have 4 apples
just like that- 2+2=4

Answer 7

2+2=4
(2+2)-4=0
Therefore, considering that (2+2) is 'a';
And considering that 4 is 'b';
a-b=0
therefore a=b
resubstituting earlier values;
(2+2)-4=0
4-4=0
therefore 2+2=4

Answer 8

2+2=4.

You are asking to prove. That shows the above sum in Correct.
So, no need to prove

Answer 9

How rigorous do you want to get? According to the linked source, the complete proof involves 2109 subtheorems and 22607 steps. Oftentimes, the "really obvious" things are the hardest ones to prove. You run into the problem where "if I can't assume *that*, what am I allowed to assume?" The answer ends up being "not very much".

Yeah, sometimes I feel professional mathematicians have way too much time on their hands. ;-)

Answer 10

A primary school kid repeated what his teacher taught :
" 2 + 2, the sonafabitch is 4".
The parent was horrified, and demanded an immediate explanation from the teacher.
The said ;" Two plus two, the sum of which is Four!" What more proof do you want?

Answer 11

ok you have 2 dollars and someone gives you 2 more now you hafve 4 dollars in all