Question

afla multimea: D18, D11, D50

Answer 1

$D_{18}=\left\{\pm1,\pm2,\pm3,\pm6,\pm9,\pm18\right\}$

$D_{11}=\left\{\pm1,\pm11\right\}$

$D_{50}=\left\{\pm1,\pm2,\pm5,\pm10,\pm25,\pm50\right\}$