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SSC Sample Paper Mock Test-12 SSC CGL Tear-II Paper-1

  • question_answer
    Which is the least number which when doubled will be exactly divisible by 12, 18, 21 and 30?

    A) 2520

    B)  1260   

    C)  630     

    D)  196

    Correct Answer: C

    Solution :

    The LCM of 12,18,21,30 \[\therefore \] LCM\[=2\times 3\times 2\times 3\times 7\times 5=1260\] \[\therefore \]      The required number \[=\frac{1260}{2}=630\]


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