Question

the average of 1,3,5,7,9.....to 25 terms is​

Answer 1

$average = \frac{(1 + 3 + 5 + 7 + .... +2 5)}{25}$

using AP u can find the sum

sum=169

$then \: average \: = \frac{169}{25}$

if u want to know how the sum would come then refer to attachment