Răspuns :
1+2+3 +..+157 = 157*158/2 =12403
1+2+3+...+206 = 206*207/2 = 21321
1+2+3+...+325 = 325*326/2 = 52975
1+2+3+...+206 = 206*207/2 = 21321
1+2+3+...+325 = 325*326/2 = 52975
a) 157x158:2=24806:2=12403
b) 157x158:2=24806:2=12403
c) 206x207:2=42642:2=21321
d) 325x326:2=105950:2=52975
Sper ca te-am ajutat :)
b) 157x158:2=24806:2=12403
c) 206x207:2=42642:2=21321
d) 325x326:2=105950:2=52975
Sper ca te-am ajutat :)