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

[EX Q]: Problem: the average of first 5 multiples of 5 is
[EX A]: 1

[EX Q]: Problem: a train covers a distance of 100 km in 1 hour . if its speed is decreased by 10 km / hr , the time taken by the car to cover the same distance will be ?
[EX A]: 1 hr 6 min

[EX Q]: Problem: in the rectangular coordinate system , points ( 16 , 0 ) and ( 16 , 0 ) both lie on circle c . what is the maximum possible value of the radius of c ?
[EX A]:
16