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  9. Q150

BPSC (Bihar PCS) 2020 · Question 150 of 150

If the average of m numbers is n² and that of n numbers is m², then the average of m + n numbers is

Mental Ability

  1. An/m
  2. Bm/n
  3. CmnCorrect
  4. Dm + n
  5. ENone of the above / More than one of the above

Answer: C. mn

Explanation

Total = m·n² + n·m² = mn(m + n); dividing by (m + n) gives mn.

Source: prepp.in

← Q149View full paper (150 questions)

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