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

[EX Q]: Problem: by selling an article at rs . 600 , a shopkeeper makes a profit of 25 % . at what price should he sell the article so as to make a loss of 25 % ?
[EX A]: s . 360

[EX Q]: Problem: a rectangular plot measuring 90 metres by 50 metres is to be enclosed by wire fencing . if the poles of the fence are kept 10 metres apart , how many poles will be needed ?
[EX A]: 28

[EX Q]: Problem: what is the units digit of 16 ^ 83 × 13 ^ 82 × 11 ^ 87 ?
[EX A]:
6