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Railways Sample Paper RRB (Assistant Loco Pilot & Technician) Sample Test Paper-14

  • question_answer
    What is the least number of to be added to 666 to make it a perfect square?

    A)  10                               

    B)  20

    C)  30                   

    D)       40

    Correct Answer: A

    Solution :

     \[{{25}^{2}}=625\]      \[{{26}^{2}}=676\] Number to be added   \[=676-666=10\]


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