Multiple Choice Questions on The average of m numbers is n4 and the average of n numbers is m4 The average of m n numbers is ........ for CDS Exam Preparation

Back to Main Page

Multiple Choice Questions

The average of m numbers is n4 and the average of n numbers is m4 The average of m n numbers is ........

Quantitative Aptitude (CDS) Average
    Sign in with Google
    Download Solution PDF

    The average of m numbers is n4 and the average of n numbers is m4. The average of (m + n) numbers is

    mn

    Incorrect Answer

    m2 + n2

    Incorrect Answer

    mn(m2 + n2)

    Incorrect Answer

    mn(m2 + n2 – mn)

    Correct Answer
    छोटे Courses बड़े Results
    Master Average
    Prepare through Micro-courses
    Try Now
    Explanation:

    Sum of m numbers=n4×m
    Sum of n numbers=m4×n
    Therefore, average of (m + n) numbers =(n4×m+m4×n)/(m+n)
    =mn(n3+m3)/(m+n)
    =mn(m+n)(m2−mn+n2)/m+n
    =mn(m2 + n2 – mn)

    Please Wait..

    Let's Discuss

    Please wait..
    Master
    Average
    With abhipedia
    Micro Courses
    Try Now

    Please Wait..

    What our students have to say
    Download Abhipedia Android App

    Access to prime resources

    Downlod from playstore
    download android app download android app for free