Question

The average of 7 consecutive numbers is n. If the next two numbers are included, the average will be.....

Answer 1

The average of $7$ consecutive numbers is $n$ implies that the $4th$ term is equal to n.
Now if we include next two terms then the average of $9$ terms will be the 5th term. Now as the terms are consecutive, so the $5th$ term will be $n+1.$