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Railways Sample Paper RRB (Assistant Loco Pilot & Technician) Sample Test Paper-7

  • question_answer
    The mean of five consecutive numbers is 7. Which is the highest number?

    A)  8                                

    B)  10

    C)  7                    

    D)       None of these

    Correct Answer: D

    Solution :

     \[x+x+1+x+2+x+3+x+4=7\,\,5=35\]      \[\Rightarrow \] \[5x+10=35\]      \[\Rightarrow \] \[5x=35-10=25\]      \[\Rightarrow \] \[x=\frac{25}{5}=5\]      \[\therefore \] The largest number \[=x+4=5+4=9\]


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