Multiple Choice Questions on a b c d are non zero integers such that ab divides cd If a and c are coprime then which one of the f........... for CDS Exam Preparation

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Multiple Choice Questions

a b c d are non zero integers such that ab divides cd If a and c are coprime then which one of the f...........

Quantitative Aptitude (CDS) Number System
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    a, b, c, d are non-zero integers such that (ab) divides (cd). If a and c are coprime, then which one of the following is correct?

    a is a factor of c

    Incorrect Answer

    a is a factor of b

    Incorrect Answer

    a is a factor of d

    Correct Answer

    d is a factor of a

    Incorrect Answer
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    Explanation:

    Since we are given that a and c are co-prime
    i.e. HCF of a and c is 1, therefore we can say that a definitely divides d exactly.
    So, a is a factor of d.

    By: Munesh Kumari
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