Răspunsuri

2014-11-15T11:53:32+02:00
1x20=20 
2x10=20
4x5=20
20x1=20
10x2=20
5x4=20
6 variante ;)

5 4 5
2014-11-15T12:07:16+02:00
1*20=20, 1+20=21
2*10=20, 2+10=12
4*5=20, 4+5=9
3 solutii
2 5 2