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Railways Quantitative Aptitude Basic Calculations Sample Paper Square Roots & Cube Roots Sample Test Paper-5

  • question_answer
    A gardener arranges plants in rows to form a square. He finds that in doing so 15 plants are left out. If the total number of plants are 3984, the number of plants in each row are,

    A)  62                   

    B)  63

    C)  64                   

    D)  None of these.

    Correct Answer: B

    Solution :

    [b] Gardener arranges \[\left( 3984-15 \right)=3969\] plants in different rows to form a square. Let no. of plants in each row by ?x? \[\therefore \] \[x\times x=3696\] \[{{x}^{2}}=3696\] \[\Rightarrow \] \[x=63\]


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