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Gasiti toate numerele naturale de forma 2x5y divizibile cu 12

Răspuns :

DlSmall
2052:12=171
2256:12=188
2352:12=192
2556:12=213
2652:12=221
2856:12=238
2952:12=246
[tex]\overline{2x5y}\vdots 12\\ \overline{2x5y}\vdots 4;3\\ y\in\{2,6\}\\ \overline{2x52}\vdots3\\ x\in\{0,3,6,9\}\\ 2052,2352,2652,2952\\ \overline{2x56}\vdots3\\x\in\{2,5,8\}\\ 2256,2556,2856[/tex]

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