the mean of 31 results is 60 if the mean of the first 16 results is 58 and that of the last 16 results is 62 finf the 16th results
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Answered by
37
Mean of 31 terms=60
Thus their total =31×60=1860
Mean of 1st 16=58
Their total=16×58=928
Mean of last 16=62
Their total=16×62=992
928
+992
----------
1920
In this counting 16th term came 2 times...
Thus 16th term=
1920-1860
=60
16th term is 60
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Answered by
7
mean of 31 result=60
mean of first 16 terms=58
sum of first 16 terms=16*58=928
mean of last 16 terms=62
sum of last 16 terms=16*62=992
Sum of the above=992+928
=1920
sum of all the terms=31*60=1860
difference=1920-1860
=60
16th term=60
mean of first 16 terms=58
sum of first 16 terms=16*58=928
mean of last 16 terms=62
sum of last 16 terms=16*62=992
Sum of the above=992+928
=1920
sum of all the terms=31*60=1860
difference=1920-1860
=60
16th term=60
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