Răspuns :
2+5+6+8+10=12+14+16+18+20+22+24+26+28+30+32+34+36+38+40+42+44+46+48+50+52+54+56+58+60+62+64+66+68+70+72+74+76+78+80+82+83+84+86+88+90+92+94+96+98+100....+186=iar apoi calculezi
Mai ușor prin puteri
2+5+6+8+10=12+14+16+18+20+22+24+26+28+30+32+34+36+38+40+42+44+46+48+50+52+54+56+58+60+62+64+66+68+70+72+74+76+78+80+82+83+84+86+88+90+92+94+96+98+100....+186=iar apoi calculezi
Mai ușor prin puteri