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7th Class Mathematics Data Handling Question Bank Data Handling

  • question_answer
    The mean of five numbers is 27. If one of the numbers is excluded, the mean gets reduced by 2. What is the excluded number?

    A)  \[35\]                                    

    B)  \[27\]

    C)  \[25\]                  

    D)         \[40\]

    Correct Answer: A

    Solution :

       Let the sum of four numbers be y and the excluded number be x. Then \[\frac{y+x}{5}=27\] and , \[\frac{y}{4}=25\]or \[x+y\] = 135 and y = 100 \[\Rightarrow \]\[x=35\]


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