Răspuns :
Răspuns:
a)1+2+3+4+5+6+7=28
c)7+14+21+28+35+42=147
b)10+20+30+40+50+60+70=280
d)11+12+13+14+15+16+17+18=116
Sper că team ajutat!!
Răspuns:
a) 1+2+3+4+5+6+7=3+7+11+7=10+18=28
b) 10+20+30+40+50+60+70=30+70+110+70=100+180 =280
c) 7+14+21+28+35+42=21+49+77=70+77=147
d) 11+12+13+14+15+16+17+18=23+27+31+35=50+66=116