Question

scrieti toate numerele de forma 123×divizibil cu 2

Answer 1

1230,1232,1234,1236,1238 astea sunt toate

Answer 2

123x divizil cu 2 daca u.c∈{0,2,4,6,8}⇒ x∈{0,2,4,6,8}⇒ 123x={1230,1232,1234,1236,1236,1238}