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Cel mai inteligent răspuns!
2014-10-21T19:03:33+03:00
1+2+3+4+...+100=100*101/2=50*101=5*10*101=505*10=5050
2014-10-21T19:05:19+03:00
Este o formula: 1+2+3+...+n=n+(n+1)/2
In cazul tau:
1+2+3+...+100=
=100+101/2=
=201/2=
=105.5

Sper ca te-am ajutat!
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