13. The mean of 6 numbers is 300. If one number is excluded then the mean becomes 280.
Then the excluded number is ...
Answers
Answered by
1
Answer:
400
Step-by-step explanation:
mean of 6 number = 300
sum of 6 number = 6×300
= 1800
mean of 5 number= 280
sum of 5 number = 5 ×280
= 1400
excluded number = 1800 - 1400
= 400
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Answered by
1
Answer:400
Step-by-step explanation:
5=280
When one is include
=300
The difference between 300 and 280 is 20,which will effect all the five members.
Therefore the member other than five members will be:
=20*5+300=400
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