If \( { }^{k+5} P_{k+1}=\frac{11(k-1)}{2} \cdot{ }^{k+3} P_{k} \), then the values of \( k \) ar...
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If \( { }^{k+5} P_{k+1}=\frac{11(k-1)}{2} \cdot{ }^{k+3} P_{k} \), then the values of \( k \) are
(A) 7 and 11
(B) 6 and 7
(C) 2 and 11
(D) 2 and 6
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