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      Question

      If a + b + c = 5 and ab + bc + ca = 7, then the value of

      a³ + b³ + c³ – 3abc is:
      A 15 Correct Answer Incorrect Answer
      B 20 Correct Answer Incorrect Answer
      C 25 Correct Answer Incorrect Answer
      D 30 Correct Answer Incorrect Answer

      Solution

      The correct answer is B

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