A) Remain the same
B) increase by 1
C) Increase by 1.6
D) increase by 1.75
Correct Answer: B
Solution :
The numbers are \[x,\]\[x+1,\] \[x+2,\] \[x+3,\] \[x+4\] \[\therefore \] \[x+x+1+x+2+x+3+x+4=5n\] \[\Rightarrow \] \[5x+10=5n\] \[\Rightarrow \] \[x=n-2\] Now required average \[x+x+1+x+2+x+3\] \[=\frac{+x+4+x+5+x+6}{7}\] \[=\frac{7x+21}{7}=x+3\] \[=n-2+3=n+1\] Thus, the average will increase by 1.You need to login to perform this action.
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