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Railways Sample Paper RRBs Assistant Loco Pilot and Technician CBT STAGE-I Sample Paper-25

  • question_answer
    The LCM of two prime numbers x and y\[\left( x>y \right)\]is 161. The value of\[(3y-x)\]is

    A)  \[-2\]   

    B)         \[-1\]

    C)  1                    

    D)         2

    Correct Answer: A

    Solution :

    \[161=7\times 23.\] So, x = 23 and y = 7 \[\therefore \]      \[(3y-x)=(3\times 7-23)=-\,2\]


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