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AlexiaAlex
a fost răspuns

CUM SE REZOLVA ACEASTA PROBLEMA DE MATEMATICA?
2+4+6+.....+100=?

Răspuns :

Max13
[tex]2+4+6+8+...+100=2(1+2+3+...+50)= 2*\frac{50*51}{2}=50*51 [/tex][tex]=2550.[/tex]
[tex]\displaystyle 2+4+6+...+100=2(1+2+3+...+50)=2 \times \frac{50(50+1)}{2} = \\ \\ =2 \times \frac{50 \times 51}{2} =\not2 \times \frac{2550}{\not2} =2550[/tex]

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