Sample questions published by the UK Border Agency to help applicants revise for the test include: "UK citizens can vote at age 18 – true or false?" (true); "Are Scottish banknotes valid throughout the UK?" (yes); "Where is the Prime Minister's official London residence – Downing Street, Parliament Square, Richmond Terrace or Whitehall Place?" (Downing Street); and "Which two places could you go to get a National Insurance number – social security office, education department, Home Office or Jobcentre Plus? (social security office and Jobcentre Plus).