Which pair of averages cannot be calculated when one of numbers in the series is zero?

Which pair of averages cannot be calculated when one of numbers in the series is zero?

Q. Which pair of averages cannot be calculated when one of numbers in the series is zero?

  1. Geometric mean and Median
  2. Harmonic mean and Mode
  3. Simple mean and Weighted mean
  4. Geometric mean and Harmonic mean

Answer: Geometric mean and Harmonic mean

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