Question

Aflati, in fiecare caz, numerele care se impart cu zero simultan:
a) 8 si 12
b) 15 si 21
c) 30 si 42

Answer 1

8 = 2 x 2 x 2 = 2 la puterea a treia
12 = 2 x 2 x 3 = 2 la puterea a doua x 3
15 = 3 x 5  
21=3x7
30 = 2 x 3 x 5
42 = 2 x 3 x 7