Q: In this task, you're given an article and an answer. Your task is to generate the question for the answer based on the given article.
Article: Metro Pocket Guide _ Each passenger needs a farecard to enter and go out . Up to two children under age five may travel free with a paying customer . Farecard machines are in every station. Bring small bills because there are no change machines in the stations and farecard machines only provide up to $5 in change. Get one ticket of unlimited Metrorall rides with a One Day Pass. Buy it from a farecard machine in Metro stations. Use it after 9:30 a,m. until closing on weekdays, and all day on weekends and holidays . _ Open: 5 a.m. Mon.-Fri. 7 a.m. Sat.-Sun. Close : midnight Sun .-Thurs. 3 a.m.Fri.-Sat. nights Last train times vary. To avoid missing the last train, please check the last train times posted in stations. _ When paying with exact charge , the fare is $1.35. When paying with a SmarTripRcard , the fare is 1.25. _ Senior citizens 65 and older and disabled customers may ride for half the regular fare. On Metrorail and Metrobus, use a senior/disabled farecard or SmarTrip Rcard . For more information about buying senior/disabled farecard, SmarTripRcards and passes, please visit MetroOpensDoors .com or call 202-637-7000 and 202-637-8000. Senior citizens and disabled customers can get free guide on how to use proper Metrobus and Metrorail services by calling 202-062-1100. Travel tips . Avoid riding during weekday rush periods -before 9:30 a.m. and between 4 and 6p.m. . If you lose something on a bus or train or in a station, please call Lost &Found at 202-962-1195 .
Answer: They make change for no more than $5.
A:
What should you know about farecard machines?