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  3. 8th Class
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8th Class Mathematics Sample Paper Mathematics Sample Paper-7

  • question_answer
    If \[\mathbf{P}:\mathbf{Q}:\mathbf{R}=\mathbf{2}:\mathbf{3}:\mathbf{4}\]and\[{{\mathbf{P}}^{\mathbf{2}}}+{{\mathbf{Q}}^{\mathbf{2}}}+{{\mathbf{R}}^{\mathbf{2}}}=\mathbf{11600}\], then find\[\mathbf{P}+\mathbf{Q}-\mathbf{R}\], where P, Q and R are whole numbers.

    A) 16        

    B)      20

    C) 22                    

    D) 11

    E) None of these

    Correct Answer: B

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