The mean of eight numbers is 27 . If one more number is included, then the mean is 26.Find
the included number
please do in copy
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The mean of eight numbers is 27 . If one more number is included, then the mean is 26.Find
the included number
please do in copy
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Answer:
Initially,
Mean of 8 numbers = 27
Total sum of 8 numbers = 27 × 8 = 216
Now, after including a number,
Total sum of 9 number = 26 × 9 = 234
So, included number = 234 - 216 = 18
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