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9th Class Mathematics Number System and its Operations Question Bank Number System

  • question_answer
    In a garden, there are 10 rows and 12 columns of mango trees. The distance between the two trees is 2 metres and a distance of one metre is left from all sides of the boundary of the garden. The length of the garden is:

    A) 20 m                   

    B)        22 m

    C) 24 m    

    D)        26 m

    E)  None of these

    Correct Answer: C

    Solution :

    Explanation Option [c] is correct. Each row contains 12 plants. There are 11 gapes between the two corner trees \[\left( 11\times 2 \right)\] metres and 1 metre on each side is left. Therefore, length. \[=\left( 22+2 \right)m=24\]               


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