[redaktim i pashqyrtuar][redaktim i pashqyrtuar]
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Rreshti 12:
 
p.sh.:
<math>{5\choose 2}=\frac{5.4 \cdot4}{2.1 \cdot1}=\frac{20}{2}=10</math>
<math>{6\choose 2}={15}</math>