The mean of 5 numbers is 20 , if 1 number is excluded mean of remaining numbers is 23. Find out the excluded number
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Mean of 5 numbers = 20.
So, Sum of 5 numbers = 20*5 = 100.
After excluding,
Mean of 4 numbers = 23
So, Sum of 4 numbers = 23*4 = 92.
Thus, Excluded number = 100-92 = 8.
So, Sum of 5 numbers = 20*5 = 100.
After excluding,
Mean of 4 numbers = 23
So, Sum of 4 numbers = 23*4 = 92.
Thus, Excluded number = 100-92 = 8.
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