the mean of 5 numbers is 20 if one of the number is excluded mean of the remaining number becomes 23 find the excluded number please give the answer
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Answered by
1
Answer:
Excluded number is 8
Step-by-step explanation:
Mean of 5 numbers is 20
Total sum of the all the numbers = 5 x 20 = 100
if one of the number is excluded mean of the remaining number becomes 23
i,e Mean of 4 numbers is 23
Total sum of 4 numbers = 4 x 23 = 92
Excluded number = Initial sum of 5 numbers - Final sum of 4 numbers
= 100-92
= 8
Excluded number is 8
Answered by
0
Given,
The mean of 5 numbers = 20
So, the total sum of the numbers = 20 x 5 = 100
After excluding one number,
The mean of the remaining 4 numbers = 23
So, the total sum of these numbers = 23 x 4 = 92
Hence,
The excluded number is = 100 – 92 = 8.
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