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SSC Sample Paper Mock Test-17 SSC CGL Tear-II Paper-1

  • question_answer
    What is the unit digit in \[{{(3157)}^{754}}?\]

    A) 9

    B)  3      

    C)  4

    D)  7

    Correct Answer: A

    Solution :

    Desired digit = Unit digit in \[{{(7)}^{754}}\] = Unit digit in \[\{{{({{7}^{4}})}^{188}}\times {{7}^{2}}\}=\] Unit digit in \[(1\times 49)=9\] \[\therefore \] Unit digit in \[{{(3157)}^{754}}\]is 9.


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