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

  • question_answer
    What is the last digit in the expansion of \[{{(2457)}^{754}}?\]

    A) 3                                 

    B)  7

    C)  8                                

    D)  9

    Correct Answer: D

    Solution :

    The last digit in the expansion of \[{{(2457)}^{754}}\]is depend on\[{{(7)}^{754}}\] \[{{(7)}^{754}}={{({{7}^{4}})}^{188}}\times {{7}^{2}}=1\times 49=49\] Hence, last digit is 9.


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