The mean of 5 numbers is 20. If one number is excluded, the mean of the remaining numbers becomes 23. Find the excluded number
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Answer:
The excluded Number = 8
Step-by-step explanation:
The mean of 5 numbers,
x/5 = 20
x = 100
If one number is excluded,
x/4 = 23
x = 92
The excluded number = 100-92 = 8
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