Question

The mean of 10 numbers is 28. If one number is excluded, their mean is 25. Find the excluded number.​

Answer 1

☘️Solution:-

Given,

Mean of 10 numbers = 28

Total Sum of all numbers = 28×10 → 280

One Number Excluded, → 10-1 = 9

Mean of 9 numbers = 25

Total Sum of 9 numbers = 25×9 → 225

Required Number → 280-225 = 55

• Value ☞ $\Large{\red{\bold{55}}}$

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