با توجه به دو مجموعه $A=\left\{ 2,3,7,11 \right\}$ و $B=\left\{ 5,6,7 \right\}$ عبارتهای زیر را کامل کنید.
$A\bigcup B=\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,n(A)=$
$A\bigcap B=\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,n(A\bigcup B)=\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,A-B=$
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