Răspuns:
ex 23: a) 432, 435, 438
b)513,543, 573
c)720, 723, 726, 729
d)6225, 6625, 6325
e)7452, 7752
f)8502, 8532, 8562, 8592
ex 24: a)7320, 7324, 7328
b)5032, 5036
c)6952, 6956
d)81016, 81036, 81056
e)30828, 30848, 30868, 30888
