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Suma gauss...2+4+6...+2016=?
Va rog muult, e urgeent

Răspuns :

Eleeweleew
2+4+6+...+2016=
=2(1+2+3+...+1008)=
=2×1008×1009÷2=
=2016×1009÷2=
=2034144÷2=
=1017072

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