Multiple Choice Questions on If a b c 27 then what is the value of a ndash 7 3 b ndash 9 3 c ndash 11 3 ndash 3 a ndash 7 b ndash........... for SSC CGL Exam Preparation

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Multiple Choice Questions

If a b c 27 then what is the value of a ndash 7 3 b ndash 9 3 c ndash 11 3 ndash 3 a ndash 7 b ndash...........

Quantitative Aptitude (CGL) Algebra
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    If a + b + c = 27, then what is the value of (a – 7)3 + (b – 9)3 + (c – 11)3 – 3(a – 7)(b – 9)(c – 11)?

    0

    Correct Answer

    9

    Incorrect Answer

    27

    Incorrect Answer

    81

    Incorrect Answer
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    Explanation:

    A+b+c=27
    (a-7)+(b-9)+(c-11)=27-7-9-11
    (a-7)+(b-9)+(c-11)=0
    So (a – 7)3 + (b – 9)3 + (c – 11)3 – 3(a – 7)(b – 9)(c – 11) = {(a-7)(b-9)(c-11)}2{(a-7)2+(b-9)2+(c-11)2}=0

    By: MIRZA SADDAM HUSSAIN
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