Question

aflați toate numerele de 3 cifre care inpartite la 15 , 35 , 63 , dau de fiecare data 11​

Answer 1

Explicație pas cu pas:

X:15=c1 rest 11, 11<15=> X=15×c1+11=>X-11=15×c1

X:35=c2 rest 11, 11<35=> X=35×c2+11=> X-11=35×c2

X:63=c3 rest 11, 11<63=> X=63×c3+11=> X-11=63×c3

=> X-11= multiplu comun al nunerelor 15, 35, 63, de 3 cifre=> X-11={315, 630, 945}=> X={326, 641, 956}