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Railways Sample Paper RRBs Assistant Loco Pilot and Technician CBT STAGE-I Sample Paper-11

  • question_answer
    Find out the ratio of LCM and HCF of 270 and 405.

    A)  6 : 1                

    B)  2 : 3

    C)  3 : 2                

    D)  1 : 6

    Correct Answer: A

    Solution :

    \[\because \] \[270=2\times 3\times 3\times 3\times 5\] and\[405=3\times 3\times 3\times 3\times 5\] \[\therefore \] HCF of 270 and \[405=3\times 3\times 3\times 5=135\] and LCM of 270 and \[405=2\times 3\times 3\times 3\times 3\times 5\]  = 810 \[\therefore \] Required ratio \[=\frac{810}{135}=\frac{6}{1}=6:1\]


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