The task is to generate the correct answer for a given math problem.

[EX Q]: Problem: by selling an article for $ 195 , a person gains $ 45 . what is the gain % ?
[EX A]: 30 %

[EX Q]: Problem: what is the sum of the odd integers from 55 to 75 , inclusive ?
[EX A]: 71

[EX Q]: Problem: if 1 + 3 = 10 ; 3 + 5 = 52 ; 5 + 7 = 174 then 7 + 11 = ?
[EX A]:
46