If the mean of 5 , 8 , 9 , 6, 12 , p is 7,then find the value of p.
A
10
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B
2
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C
7
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D
4
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Solution
The correct option is B 2 The mean of n observation is given by Sumofnobservationnumberofobservation Here , Mean = 7 The sum of the observations = 5 + 8 + 9 + 6 +12 + p = 40 + p