BD Merit - Freelancing, BCS, Bank, Primary, Admission, NTRCA

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

View Answer

Workspace

Report

Answer: Option D

Explanation:

Average of m numbers n^2

So, Sum of m numbers= mn^2

Average of n numbers m^2

So, sum of n numbers= nm^2

Now,

Sum of (m+n) numbers= mn^2+nm^2 = mn(m+n)

Average of (m+n) numbers= {mn(m+n)}/(m+n) = mn

Ans: mn.

বাংলাদেশ ব্যাংক || সহকারী পরিচালক (AD) (20-10-2023)