[tex]a) \overline{19a} \: \: \vdots \: \: 2 = > a \: \in \: \left\{0,2,4,6,8\right\}[/tex]
=>Numerele sunt :
190,192,194,196,198.
[tex]b) \overline{5aa} \: \: \vdots \: \: 2 = >a \: \in \: \left\{0,2,4,6,8\right\}[/tex]
=>Numerele sunt :
500,522,544,566,588.
[tex]c) \overline{7a8} \: \: \vdots \: \: 2= > a\:\in\:\left\{0,1,2,3,4,5,6,7,8,9\right\}[/tex]
=>Numerele sunt :
708,718,728,738,748,758,768,778,788,798.
[tex]d) \overline{a0a} \: \: \vdots \: \: 2 = > a\:\in\:\left\{2,4,6,8\right\}[/tex]
=>Numerele sunt : 202,404,606,808.
