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SSC Sample Paper Mock Test-7 SSC CGL Tear-II Paper-1

  • question_answer
    A 4 digit number is formed by repeating a 2 digit number such as 2525, 3232 etc. Any number of this form is always exactly divisible by

    A)  7

    B)  11

    C)  13

    D)  Smallest 3 digit prime number

    Correct Answer: D

    Solution :

    Let the unit digit be x and ten's digit be y. Number \[=1000y+100x+10y+x\] \[=1010y+101x\] \[=101\,\,(10y+x)\] Clearly, this number is divisible by 101, which is the smallest three digit prime number.


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