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Miscellaneous·2024·Easy

What is the number of different matrices, each having 4 entries that can be formed using 1, 2, 3, 4 (repetition is allowed)?

What is the number of different matrices, each having 4 entries that can be formed using 1, 2, 3, 4 (repetition is allowed)?

Options

  1. a.

    72

  2. b.

    216

  3. c.

    254

  4. d.

    768

    Correct answer

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