2. Sample Papers
  3. SSC

SSC Sample Paper Mock Test-11 SSC CGL Tear-II Paper-1

  • question_answer
    The average of 6 observations is 45.5. If one new observation is added to the previous observations, then the new average becomes 47. The new observation is    

    A)                         58

    B)  56   

    C)  50

    D)  46 

    Correct Answer: B

    Solution :

    Let the new observation be x. Then, \[\frac{x+6\times 45.5}{7}=47\] \[\Rightarrow \]   \[x+273=47\times 7=329\] \[\Rightarrow \]   \[x=329-273=56\]


You need to login to perform this action.
You will be redirected in 3 sec spinner