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Railways Sample Paper RRB (Group D) Sample Test Paper-15

  • question_answer
    Which is the least number that must be subtracted from 1856, so that the remainder when divided by 7,12and 16will leave the same remainder 4?

    A)  137                 

    B)  1361

    C)  140                 

    D)  172

    Correct Answer: D

    Solution :

    [d] Suppose least no. be x \[1856-x=n\,\,(LCM\,\,of\,\,7,\,\,12,\,\,16)+6\] Or \[1856-\,x=n\,\,(336)+4\] We should take n = 5 so that n (336) is nearest to 1856 And n (336)<1856 \[1856-\,x=1680+4=1684\] \[x=1856-\,1684=172\]


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