restul impartirii la 7 este : 1,2,3,4,5 si 6.
x : 7 = 1 rest 1 = > x = 7x1+1 = 8
x :7 = 2 rest 2 = > x = 7x2+2 = 16
x : 7 = 3 rest 3 => x = 7x3+3= 24
x : 7 = 4 rest 4 = > x = 7x4+4= 32
x : 7 = 5 rest 5 = > x = 7x5 + 5= 40
x : 7= 6 rest 6 = > x = 7 x 6+6 = 48
numerele sunt : 8, 16, 24, 32, 40 si 48