10th Class Mathematics Sample Paper Mathematics Sample Paper-6

  • question_answer
    If the mean of 6 observations\[\mathbf{x},\mathbf{x}+\mathbf{3},\mathbf{x}+\mathbf{6},\mathbf{x}+\mathbf{9},\mathbf{x}+\mathbf{12},\mathbf{x}+\mathbf{15}\] is 18, find the mean of first 4 observations.

    A) 25                      

    B)       18

    C) 15             

    D)     36

    E) None of these

    Correct Answer: C

    Solution :

    Not Available         

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