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The mean of 20 items is 55. If two items 45 and 30 are removed, what will be the new mean of the remaining items?
5Q:
The mean of 20 items is 55. If two items 45 and 30 are removed, what will be the new mean of the remaining items?
- 165.1true
- 265.3false
- 356.9false
- 456false
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