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Answer:
mean=189
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Mean =27
Observation doesn’t matter
If decreases then mean also decreased by same amount
If increases then mean also increased by the same amount
So here
The new mean is 27-7=20
Required answer is 20
Hope your understand
Mark it
Observation doesn’t matter
If decreases then mean also decreased by same amount
If increases then mean also increased by the same amount
So here
The new mean is 27-7=20
Required answer is 20
Hope your understand
Mark it
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