The mean marks of 30 students in a class is 58.5. Later on it was fou – McqOptions

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1.	The mean marks of 30 students in a class is 58.5. Later on it was found that 75 was wrongly recorded as 57. Find the correct them.
A.	57.4
B.	57.5
C.	58.9
D.	59.1
Answer» E.

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