Railways R.R.C. (Allahabad) Solved Paper 1st Shift Held on 1-12-2013

  • question_answer
    36. The H.C.F. of 1.75, 5.6 and 7 is-            

    A) 0.07                             

    B) 0.7            

    C) 0.35                             

    D) 3.5           

    Correct Answer: C

    Solution :

    H.C.F. of 1-75.5-6 and 7 \[=HCF\,\,of\,\,\frac{175}{100},\frac{56}{10}\] \[=HCF\,\,of\,\,\frac{7}{4},\frac{28}{5}\] \[=\frac{HCF\,\,of\,\,7,28\,\,and\,\,7}{LCM\,\,of\,\,4,5\,\,and\,\,1}\] \[=\frac{7}{20}\] \[=0.35\]


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