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Railways Sample Paper RRB (Assistant Loco Pilot & Technician) Sample Test Paper-3

  • question_answer
    The sum of seven consecutive numbers is 175. What is the difference between twice the largest number and thrice the smallest number?

    A)  8                                

    B)  7

    C)  10                   

    D)  12

    Correct Answer: C

    Solution :

       \[x+x+1+x+2+x+3+x+4+x+5+x+6=175\] \[\Rightarrow \] \[7x+21=175\] \[\Rightarrow \] \[7x=175-21=154\] \[\Rightarrow \] \[x=\frac{154}{7}=22\] \[\therefore \] Largest number                \[=x+6=22+6=28\] \[\therefore \] Required difference                         \[=3\,\,\,\,22-2\,\,\,\,\,\,28\]                         \[=66-56=10\]


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