Mean of 10 numbers is 30. Later on it was observed that numbers 15, 23 are wrong

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Mean of 10 numbers is 30. Later on it was observed that numbers 15, 23 are wrongly taken as 51, 32. The correct mean is :

Options:

A . 25.5

B . 32

C . 30

D . 34.5

Answer: Option A

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