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Find n if ""^(n-1)P3:^n P4=1:9....

Find `n` if `""^(n-1)P_3:^n P_4=1:9`.

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To solve the problem, we need to find the value of \( n \) given the equation: \[ \frac{(n-1)P_3}{nP_4} = \frac{1}{9} \] ### Step 1: Write the permutation formulas We know that the permutation \( nPr \) is given by the formula: ...
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