Question

a) Determinati toate numerele naturale de forma 23ab divizibile cu10
b) Determinati numerele naturale de forma 15ab divizibile cu 6
c) Determinati numerele naturale de forma 4a6b divizibile cu 18
d) Determinati numerele naturale de forma 8a9b care dau restul 1 prin impartirea la 5

Answer 1

a)2300,2310,2320,2330,2340,2350,2360,2370,2380,2390.
b)1500,1506,1512,1518,1524,1530,1536,1542,1548,1554,1560,1566,1572,1578,1584,
1590,1596.
c)4068,4266,4464,4662,4860.
d)8091,8096,8191,8196,8291,8296,8391,8396,8491,8496,8591,8496,8691,8696,8791,
8796,8891,8896,8991,8996.