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Mean of 100 items is 49. It was discover...

Mean of 100 items is 49. It was discovered that three items which should have been 60, 70, 80 were wrongly read as 40, 20, 50 respectively. The correct mean is :

A

80

B

50

C

`82 (1)/(2)`

D

48

Text Solution

Verified by Experts

The correct Answer is:
B
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