Seymaprenses2rans
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n elemanlı bır kumenın n-2 elemanlı alt kumelerının sayısı 6 ıse bu kumenın eleman sayısı kactır? nolur soleyın :)

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Dnzalknrans

C(n,n-2)=C(n,2)=6

 

[tex]C(n,2)=\frac{n.(n-1)}{2}=6 \\ \\n.(n-1)=12 \\ \\n=4[/tex]

 

küme 4 elemanlıdır 

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