Question 54: How many Supreme Court justices are usually needed to decide a case?
Official answer
- Five (5)
Grandpa explains
Out of nine justices, five is a majority, kiddo: more than half.
Careful: these are NOT the answer
These are the common mix-ups. The app uses them as traps so you practice.
- Nine (9)
- Three (3)
- Seven (7)
Video lesson on this topic: The Courts and the States
More questions on this topic
- 55How long do Supreme Court justices serve?
- 56Supreme Court justices serve for life. Why?
- 57Who is the Chief Justice of the United States now?
- 58Name one power that is only for the federal government.
- 59Name one power that is only for the states.
- 60What is the purpose of the 10th Amendment?
Official sources:
- USCIS · 128 Civics Questions and Answers (2025 version), M-1778 (09/25) ↗ · checked October 6, 2026
The plain explanation is ours; the official answers are USCIS's, word for word.