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  • Utilizator Brainly
2014-08-25T19:10:00+03:00
2+4+6+8+10+12+14+16+18+20=(20+2)*10:2=22*5=110
1+2+3+4+5+6+7+8+9+10=11*10:2=55
110:55=2

1 5 1
2014-08-25T19:13:03+03:00
0+2+4+6+8+10+12+14+16+18= 90 0+1+2+3+4+5+6+7+8+9= 45 90 : 45 = 2