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Determine the number of such strings

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Reference no: EM131233611

Let n ≥ 2 be an integer. Consider strings consisting of n digits.

  • Determine the number of such strings, in which no two consecutive digits are equal. Justify your answer.
  • Determine the number of such strings, in which there is at least one pair of consecutivedigits that are equal. Justify your answer.

Reference no: EM131233611

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