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1+1=

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problem
anwser
1+1=   2  
2+2=   4  
3+3=   6  
4+4=   8  
5+5=   10  
6+6=   12  
7+7=   14  
8+8=   16  
9+9=   18  
10+10=   20  
11+11=   22  
12+12=   24  
13+13=   26  
14+14=   28  
15+15=   30  
16+16=   32  
17+17=   34  
18+18=   36  
19+19=   38  
20+20=   40  


   


 

 

 

 

 

 
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