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If each of n numbers `x_(i)=i`, is replaced by `(i+1)x_(i)`, then the new mean is

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If each of n numbers `x_(i)=i`, is replaced by `(i+1)x_(i)`, then the new mean is
A. `((n+1)(n+2))/(n)`
B. `n+1`
C. `((n+1)(n+2))/(3)`
D. none of these
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Correct Answer - D
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