Răspuns:
6.
a) 355,456,180,403,391
b) 724,598,456,180
c) 355,765,403,661,391,789
d) 355,724,661,391
e) 456,765,789
f) 355,598,456,789
7.
a)456-460,743-740,896-900
b)670-700,140-100,890-900
