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Railways Sample Paper RRB (Assistant Loco Pilot & Technician) Sample Test Paper-11

  • question_answer
    The smallest number which when added to the sum of the squares of 8 and 12, gives a perfect square, is

    A)  0                                

    B)  3

    C)  8                      

    D)       17

    Correct Answer: D

    Solution :

      \[{{(8)}^{2}}+{{(12)}^{2}}=208.\] Clearly \[{{(14)}^{2}}<208<{{(15)}^{2}}\] \[\therefore \]Required number to be added \[={{(15)}^{2}}-208=17\]


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