9th Class Mental Ability Analytical Reasoning Question Bank Analytical Reasoning

  • question_answer
                           How many squares are there in all on the chessboard?

    A)  108                             

    B)  144                 

    C)  196                             

    D)  204

    Correct Answer: D

    Solution :

    :\[{{8}^{2}}+{{7}^{2}}+{{6}^{2}}+...+{{2}^{2}}+{{1}^{2}}=204.\]


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