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If .^(6)P(r): .^(6)P(5) = 1:2, find the ...

If `.^(6)P_(r): .^(6)P_(5) = 1:2`, find the value of r.

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To solve the problem, we start with the given ratio of permutations: \[ \frac{^6P_r}{^6P_5} = \frac{1}{2} \] ### Step 1: Write the formula for permutations The formula for permutations is given by: ...
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