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Railways Sample Paper RRBs Assistant Loco Pilot and Technician CBT STAGE-I Sample Paper-15

  • question_answer
    On simplification of\[\frac{{{(4.7)}^{3}}+0.027}{{{(4.7)}^{2}}-1.41+0.09},\]we get

    A)  4.7                  

    B)  1.41

    C)  5                    

    D)  6

    Correct Answer: C

    Solution :

    \[\frac{{{(4.7)}^{3}}+0.027}{{{(4.7)}^{2}}-1.41+0.09}\] \[=\frac{{{(4.7)}^{3}}+{{(0.3)}^{3}}}{{{(4.7)}^{2}}-4.7\times 0.3+{{(0.3)}^{2}}}\] \[=\frac{(4.7+0.3)[{{(4.7)}^{2}}-4.7\times 0.3+{{(0.3)}^{2}}]}{{{(4.7)}^{2}}-4.7\times 0.03+{{(0.3)}^{2}}}=5\]


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