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Miscellaneous·2011·Easy

What is the value of n, if P(15, n-1) : P(16, n-2) = 3 : 4 ?

What is the value of n, if P(15, n-1) : P(16, n-2) = 3 : 4 ?

Options

  1. a.

    10

  2. b.

    12

  3. c.

    14

    Correct answer
  4. d.

    15

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