Multiple Choice Questions on The sum of the squares of four consequtive natural numbers is 294 What is the sum of these numbers ........ for CDS Exam Preparation

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Multiple Choice Questions

The sum of the squares of four consequtive natural numbers is 294 What is the sum of these numbers ........

Quantitative Aptitude (CDS) Number System
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    The sum of the squares of four consequtive natural numbers is 294 . What is the sum of these numbers?

    38

    Incorrect Answer

    34

    Correct Answer

    30

    Incorrect Answer

    26

    Incorrect Answer
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    Explanation:

    let the numbers be (n-1) , n, (n+1) , (n+2)
    ATQ (n-1)2+n2+(n+1)2+(n+2)2 = 294
    4n2 + 4n + 6 = 294
    n2 + n - 72 = 0
    => n=8 or n= - 9
    therefore numbers are 7,8,9 and 10.
    sum of these numbers is = 34.

    By: Munesh Kumari
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