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  1. If the average of m numbers is n2 and that of n numbers is m2,then average of (m + n) numbers is

    1. m/n
    2. m + n
    3. mn
    4. m – n
Correct Option: C

The average of m numbers = n2
Total number of ‘m’ numbers = m × n²
And the average of n numbers = m2
Total number of ‘n’ numbers = n × m²

∴ Average of (m + n) numbers = mn² + m²n = mn(n + m) = mn
m + nm + n



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