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If the mean and median of a set of numbers are 12 and 15 respectively, then the mode is approximately:

  • A.18
  • B.21
  • C.24
  • D.27

Answer: B

\[ \text{Mode} = 3\,\text{Median} - 2\,\text{Mean} \]

\[ = 3(15) - 2(12) = 45 - 24 = 21 \]

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