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1. |
The mean of 8 article was found to be 15. On rechecking, it was found that two article were wrongly takenas 11 and 9 instead of 16 and 14 respectively. Find the correct mean. |
A. | 16.25 |
B. | 16.75 |
C. | 15.5 |
D. | 17.75 |
Answer» B. 16.75 | |