Question 39 of 100 · 2008 test
How many justices are on the Supreme Court?
This question is from the 2008 test, which applies if you filed Form N-400 before Oct 20, 2025; later filers take the 2025 test of 128 questions - check your version on the official USCIS test-updates page.
Answer
- nine (9)
Explanation
The number of justices is set by Congress; the current count is kept current from the officials file.
Why it matters
The size of the Court has changed through history but has stayed the same for over 150 years.
The 65/20 special consideration
Question 39 is not in the 65/20 set. An applicant who is 65 or older and has been a lawful permanent resident for 20 years or more studies only the 20 marked questions, so this one would not be asked. Everyone else studies all 100.
Answers that get mixed up with this one
These are the wrong options the practice test puts beside this question. Each one is the correct answer to a different question, which is what makes it tempting.
- announced our independence (from Great Britain)answers Question 8: What did the Declaration of Independence do?
- vote in a federal electionanswers Question 50: Name one right only for United States citizens.
- at age eighteen (18)answers Question 57: When must all men register for the Selective Service?
Kept up to date
This answer changes when officeholders change. HundredCivics updates it from a single verified source, so what you study here matches the current government (verified 2026-07-26).
More System of Government questions
Questions the officer draws from the same part of the test. Studying them together is what keeps their answers apart.