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Faraporecla4
a fost răspuns

Fie şirul 10,20,30,40... . Suma primelor 20 de termeni ai şirului este egal cu...

Răspuns :

IulianMM
10,20,30,40,50,60,70,80,90,100,110,120,130,140,150,160,170,180,190,200
Primii 20 de termeni

10+20+30+40+50+60+70+80+90+100+110+120+130+140+150+160+170+180+190+200=2100
ChineliMaria2006
10+20+30+40+50+60+70+80+90+100+110+120+130+140+150+160+170+180+190+200=2100

Sper ca te-am ajutat!

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