If $a,b,c,d,e$ are five consecutive odd numbers, then their average is:

Let $a$ be the first odd number. Since they are consecutive odd numbers, they can be represented as:
* $a$
* $b=a+2$
* $c=a+4$
* $d=a+6$
* $e=a+8$

For an arithmetic sequence with an odd number of terms, the average is always the middle term. Here, the middle term is $c=a+4$.

Alternatively, computing the explicit average:

$$\text{Average}=\frac{a+(a+2)+(a+4)+(a+6)+(a+8)}{5}=\frac{5a+20}{5}=a+4$$