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Miscellaneous·2024·Easy

The arithmetic mean of n numbers is M. If the sum of first (n -1) terms is k, then what is the nth number?

The arithmetic mean of n numbers is M. If the sum of first (n -1) terms is k, then what is the nth number?

Options

  1. a.

    M - k

  2. b.

    nM - k

    Correct answer
  3. c.

    n(M - k)

  4. d.

    M - nk

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