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The mean of 5 numbers is 18. If one number is excluded, their mean is 16. Find the excluded number. |
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Answer» The mean of 5 numbers is 18 Then, the sum of 5 numbers = 5 * 18 = 90 If the one number is excluded Then, the mean of 4 numbers = 16 Therefore, sum of 4 numbers = 4 * 16 = 64 Excluded number = 90 – 64 = 26 |
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