Multiple Choice Questions on 64 ndash 1 2 ndash 32 ndash 4 5 ........ for CDS Exam Preparation

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Multiple Choice Questions

64 ndash 1 2 ndash 32 ndash 4 5 ........

Quantitative Aptitude (CDS) Algebra
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    (64)–1/2 – (32)–4/5 = ?

    1/8

    Incorrect Answer

    3/8

    Incorrect Answer

    1/16

    Correct Answer

    3/16

    Incorrect Answer
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    Explanation:

    From the given equation :
    (64)–1/2 − (32)–4/5
    ⇒  (82)–1/2 − {(2)5}–4/5.
    ⇒  82 x (−1/2) −(2)5 x (−4)/5
    ⇒  8−1 − (2)−4
    ⇒ 1/8 - 1/(2)4
    ⇒ (1/8 - 1/16)
    ⇒ 1/16

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