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SSC Sample Paper Mock Test-8 SSC CGL Tear-II Paper-1

  • question_answer
    Three numbers which are co-prime to one another are such that the product of the first two is 551 and that of the last two is 1073. The sum of the three numbers is

    A) 75

    B)  81

    C)  85

    D)  89

    Correct Answer: C

    Solution :

    Let the numbers be x, y and z which are prime to one another.                                    Now,     \[xy=551,\]\[yz=1073\]        \[\therefore \]y = HCF of 551 and 1073             \[\therefore \] y = 29 \[\therefore \]      \[x=\frac{551}{29}=19\] and       \[z=\frac{1073}{29}=37\] Sum \[=19+29+37=85\]


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