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10th Class Mathematics Statistics Question Bank Statistics

  • question_answer
    Find the value of\['x'\]if the mean of\[x+2,2x+3,\]\[3x+4\]and\[4x+5\]is\[x+2\].

    A) 2                             

    B)        1

    C) 3                             

    D)        -1

    Correct Answer: D

    Solution :

    Given that the mean of\[x+2\], \[2x+3,3x+4\]and 4x + 5 is\[x+2\] \[\Rightarrow \]\[\frac{10x+14}{4}=x+2\]\[\Rightarrow \]\[6x=-6\]          \[\Rightarrow \]\[x=-1\]


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