Ex 17 vad rog frumos mai am inca 20 de facut :(

Răspuns:
1020100 si 1021110
Explicație pas cu pas:
17
a=1+3+5+...+2019
2019+1=2020:2=1010nr
2020x1010:2=1,020,100
b=2+4+6+8+...+2020
2020:2=1010
2022x1010:2=1,021,110
amu fa singur