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The mean of five numbers is 27. If one number is excluded, their mean is 25. Find the excluded number. |
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Answer» The mean of the numbers is 27 The sum of 5 numbers = 5 * 27 = 135 If one number is excluded, then the new mean is 25 Therefore sum of new numbers = 4 * 25 = 100 Therefore, excluded number = 135 – 100 = 35 |
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