Multiple Choice Questions on HCF and LCM of two numbers is 7 and 252 respectively If Ist number is 28 then find the 2nd number ........ for RRB(NTPC) Exam Preparation

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Multiple Choice Questions

HCF and LCM of two numbers is 7 and 252 respectively If Ist number is 28 then find the 2nd number ........

Quantitative Aptitude (RRB NTPC) LCM, HCF
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    HCF and LCM of two numbers is 7 and 252 respectively. If Ist number is 28 then find the 2nd number.

    252

    Incorrect Answer

    63

    Correct Answer

    126

    Incorrect Answer

    56

    Incorrect Answer
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    Explanation:

    Let the second number be x.
    We know that,
    LCM×HCF = Product of two numbers 7×252 = 28x
    x = 7×252/28 = 63

    By: Barka Mirza
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