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{{[(1+2+ 3+...+100):1010 )

Răspuns :

[(100*101):2]:1010=5050:1010=5
[tex]\displaystyle (1+2+ 3+...+100):1010 = \\\\ \text{Aplicam gaus in prima paranteza} \\ \\ \frac{n(n+1)}{2} = \frac{100(100+1)}{2}= \frac{100\cdot101}{2}=5050 \\ \\\\ 5050:1010 = 5[/tex]