2008 test · Question 18 of 100
How many U.S. Senators are there?
Official USCIS answers
- one hundred (100)
Why this is the answer
The U.S. Senate has two senators from each of the 50 states. That makes 100 senators in total.
💡 Memory tip: Two senators per state times 50 states equals 100.
This is the 2008 test, for N-400s filed before October 20, 2025. Filed on or after that date? Use the 2025 test.
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Source: USCIS, Civics (History and Government) Questions for the Naturalization Test (rev. 01/19).