FSOT Logical Reasoning Practice Questions: The Four Skills, With Answers

Logical Reasoning is Part 3 of the FSOT, and the State Department has described it in one sentence. Its practice-test page said the section "assesses making inferences, justifying conclusions, finding logical flaws, and identifying assumptions". It replaced Situational Judgment in the revised test first given on October 18-25, 2025, and on the Department's own practice test it is 30 questions in 45 minutes: about 90 seconds a question (our arithmetic), close to twice the time per question of the other two parts. Below is a free sample question, scored on the page with the reason for the answer, then how each of the four skills is tested. This is a ProSyllabus practice question, written to the State Department's published description of the test. It is not a State Department question, we do not claim it appears on the FSOT, and a score on it is our practice score: it predicts nothing about a real candidacy. ProSyllabus is an independent study site. It is not affiliated with the US Department of State, its Board of Examiners or Pearson VUE, and nothing here is official. Every rule is quoted or summarised from State Department and Pearson VUE pages, and the Department decides every candidacy.

State Department practice-test page (archive copy of Oct 7, 2026) and official practice test. Seconds per question are our arithmetic.

The other 29 Logical Reasoning questions are in our FSOT practice test: 30 Logical Reasoning questions timed at 45 minutes, as on the official practice test, with the Job Knowledge and English parts, 125 questions in all, a score per part and the reason for every answer. Start with its free sample, then unlock the full test.

The stem wordings are ours. The State Department names the four skills but has not published how many questions of each type the section has, or what the question stems look like on the live test.

An inference question gives you a few statements and asks what must be true. The right answer is the one that cannot be false if the statements are true; an answer that is probably true, or true in most real cases, is wrong. Three patterns come up often. The first is "all" and "some": if all the summit interpreters speak French and some of them speak Arabic, those few speak both, but "some" does not mean "most", and nothing follows about French speakers who are not at the summit. The second is counting: a lower rate applied to a larger number can still give the larger count, so work the figures out rather than compare percentages. The third is overlap: two groups that each hold more than half of the same people must share at least one member, because otherwise they would add up to more than everyone.

An assumption question asks for an unstated premise the conclusion needs. A useful test, ours and widely taught, is to deny the answer: if denying it makes the argument collapse, it is the assumption. Take an argument that a newsletter can go email-only without losing readers: if some print-only readers do not move to email, readership falls, so the argument needs every one of them to switch. Answers about cost or preference may be true and may even be the speaker's motive, but the conclusion does not depend on them. When an argument says one change "must" explain a result, it usually assumes that nothing else explains it, so look for a rival explanation it has not ruled out.

Some questions ask what would strengthen or weaken a conclusion; others ask what, if assumed, would make it follow. They are different. A strengthener only makes the conclusion more likely, often by ruling out another explanation: if a city credits new street lights for a fall in burglaries, finding that burglaries held steady in districts where nothing changed makes a citywide trend less likely. A justifying premise has to guarantee the conclusion: if she will chair a working group because she is its only member who has served at the post, adding the premise "the chair will be a member who has served at the post" turns "she is the only such member" into "she will chair it". A weakener usually supplies a rival cause.

Wrong answers to flaw questions often name a real flaw that this argument does not commit. Before choosing, say in your own words what the argument actually does wrong, then find the option that matches it.

Logical Reasoning gives you the most time per question of the three parts, because most questions make you read a short passage twice, once for what it says and once for what it needs or allows. A sensible split, ours, is a first pass of about a minute a question, flagging anything that needs a diagram, and the remaining time for the flagged ones. There is no penalty for guessing on the official practice test, so answer every question before time runs out.

For what the section is and how it replaced Situational Judgment, see the FSOT Logical Reasoning section guide; for all three parts, the FSOT format guide; and for one sample question from each part, the free FSOT practice test guide.

Nothing on this page is legal or career advice. Questions about your own case go to the State Department at FSOTQuestions@state.gov.