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Question
The sum of (x + 5) observations is (x3 + 125). Find the mean of the observations
Solution
Sum of the observations = x3 + 125
Number of observations = x + 5
Mean of the observations = `"Sum of the observations"/"Number of observations"`
= `(x^3 + 125)/(x - 5)`
Mean = x2 – 5x + 25
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