Question

1.Fie x si y doua numere naturale. aflati [x;y]daca:
a) ( x;y)=12, x ori y=2160
b) (x;y)=18, x ori y=6480
2.Determinati cifra x,x egal taiat 0, in urmatoarele cazuri:
a) [x5 in baza zece;21]=105
b) [x0 in baza zece;16]=80
c) [x5 in baza zece;45]=225

Answer 1

1)    a) [x;y] = 2160 : (x;y)
[x;y] = 2160 : 12
[x;y} = 180

b) [x;y] = 6480 : (x;y)
[x;y] = 6480 : 18
[x;y] = 360

As vrea sa-l rezolv si pe 2, dar nu inteleg cerinta.