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Mental Ability
Averages
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BPSC Prelims 2020 General 📅 14 Feb, 2021

If the average of m numbers is $n^{2}$ and that of n numbers is $m^{2}$, then the average of $m+n$ numbers is

A
$\frac{n}{m}$
B
$\frac{m}{n}$
C
mn
D
$m-n$
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BPSC Prelims
2020 • 14 Feb, 2021 • General
If the average of m numbers is $n^{2}$ and that of n numbers is $m^{2}$, then the average of $m+n$ numbers is
Correct Answer
See Explanation
उपर्युक्त में से कोई नहीं/उपर्युक्त में से एक से अधिक...
Ref/Book : Total Sum = $m(n^2) + n(m^2) = mn(n+m)$. Average = $mn(n+m) / (m+n) = mn$.
Ref. Subject कुल योग = $mn(n+m)$। औसत = $mn$।
Chapter Mental Ability
Ref. Topic Mathematics
Pg. No Averages
💡 Analysis & Explanation
Introduction ▼
उपर्युक्त में से कोई नहीं/उपर्युक्त में से एक से अधिक
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