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Chisinau2001
a fost răspuns

calculeaza suma tuturor nr pare incepand cu 2 pana la 20 inclusiv

Răspuns :

Romaniaitalia02
2+4+6+8+10+12+14+16+18+20=
6+6+8+10+12+14+16+18+20=
12+8+10+12+14+16+18+20=
20+10+12+14+16+18+20=
30+12+14+16+18+20=
42+14+16+18+20=
56+16+18+20=
72+18+20=
90+20=
110

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