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Railways Sample Paper RRBs Assistant Loco Pilot and Technician CBT STAGE-I Sample Paper-3

  • question_answer
    Simplify\[\frac{13\frac{4}{7}\times 13\frac{4}{7}-8\frac{3}{7}\times 8\frac{3}{7}}{13\frac{4}{7}-8\frac{3}{7}}\]to get

    A)  18                   

    B)  22  

    C)  20       

    D)  24

    Correct Answer: B

    Solution :

    \[a\,=\,13\frac{4}{7}\]and \[b=8\frac{3}{7}\] \[\therefore \,\]Given expression \[=\frac{a\times a-b\times b}{a-b}\] \[=\frac{{{a}^{2}}-{{b}^{2}}}{a-b}=a+b\] \[\,=13\frac{4}{7}+8\frac{3}{7}=22\]


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