Răspuns:
Sper sa intelegi scrisul, al doilea exercitiu cred ca poti sa-l faci singur
a)N=201+2×[200×(200+1)]/2
N=201+200×201=201×201=40401
b)N=[102×(1+102)]/2×2+103
N=102×103+103=103×103=10609
