Railways R.R.C. (Jabalpur) Solved Paper Held on 1st Shift 30-11-2014

  • question_answer 47) The heights of 7 buildings are 12 m, 13 m, 14 m, 15 m, 16 m, 17 m and 18 m. The average height of 7 buildings is?

    A) 16 m                

    B) 17 m

    C) 15 m                            

    D) 18 m

    Correct Answer: C

    Solution :

    The average height of 7 buildings          \[=\frac{12+13+14+15+16+17+18}{7}\]           \[=\frac{105}{7}=15\,\,m\]

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