A={200,202,203,204...,214}
B={200,202,204,206,208,210,212,214}
C={200,204,208,2012}
D={200,210}
E={201,204,207,210,213}
3.
a) 230,232,234,236,238 sunt divizibile cu 2
b)230,235 divizibile cu 5
c)230 divizibil cu 10
d)231,234,237 divizibile cu 3
e)232,236 divizibile cu 4
f)234 divizibil cu 9
4.
a)212,414, 616, 818
b)515
c) nu exista Ф
d)111 , 414,717
e)212,616
f)414