Identify the reasoning error. There are 448 Flaw questions in PrepTests 101–159: 110 rated easiest (1), 152 rated easy–medium (2), 126 rated hard (3), 60 rated hardest (4). Filter them below, then practice in your own materials.
Our plain-English paraphrase of the task in the first 50 of the 448 Flaw questions in PrepTests 101–159 (paraphrases, not LSAC’s copyrighted stems — use the table above to locate each question in your own materials):
PT101 S2 Q1 — Identify the weakness in the press release's reasoning.
PT101 S2 Q6 — Identify the flaw the argument is open to.
PT101 S2 Q8 — Identify the flaw in the sociologist's reasoning.
PT101 S2 Q23 — Describe the flaw in the essayist's reasoning.
PT101 S3 Q2 — Identify the reasoning error in the Dewyfresh ad.
PT101 S3 Q4 — Identify the criticism P's argument is open to.
PT101 S3 Q12 — Identify the grounds on which the reasoning is most vulnerable.
PT101 S3 Q25 — Identify the flaw in the economist's reasoning.
PT102 S2 Q9 — Identify the flaw in the consumer advocate's reasoning.
PT102 S2 Q18 — Describe the flaw in the company president's reasoning.
PT102 S2 Q20 — Identify the grounds on which the physicist's reasoning is vulnerable.
PT102 S4 Q4 — Identify the flaw in the columnist's reasoning.
PT102 S4 Q8 — Identify the grounds on which the argument is vulnerable.
PT102 S4 Q17 — Describe the flaw in the concerned citizen's argument.
PT102 S4 Q23 — Describe the flaw in the argument's reasoning.
PT103 S2 Q1 — Explain why the representative's counterargument is flawed.
PT103 S2 Q4 — Identify the flaw in Politician P's reasoning.
PT103 S2 Q15 — Identify the grounds on which the editorialist's argument is vulnerable.
PT103 S2 Q21 — Describe the flaw in Ziegler's attorney's reasoning.
PT103 S3 Q5 — Spot what the company representative's reasoning overlooks.
PT103 S3 Q8 — Identify the reasoning error in the argument.
PT103 S3 Q10 — Describe the flaw in the argument's reasoning most accurately.
PT103 S3 Q17 — Identify the possibility the reasoning overlooks.
PT103 S3 Q19 — Identify what the flawed argument actually does.
PT104 S1 Q2 — Spot what the argument fails to demonstrate.
PT104 S1 Q23 — Describe the flaw in the argument's reasoning most accurately.
PT104 S1 Q25 — Find the possibility the flawed argument does NOT overlook.
PT104 S4 Q7 — Spot the possibility the flawed argument overlooks.
PT104 S4 Q10 — Identify the criticism the argument is most vulnerable to.
PT104 S4 Q25 — Find what the flawed argument fails to recognize as consistent.
PT105 S1 Q5 — Identify the possibility the flawed reasoning ignores.
PT105 S1 Q10 — Spot the possibility the flawed argument fails to consider.
PT105 S1 Q26 — Identify what the flawed argument does wrong.
PT105 S4 Q8 — Identify the possibility the linguist's reasoning ignores.
PT105 S4 Q13 — Identify what makes the argument's reasoning questionable.
PT105 S4 Q19 — Identify the possibility the reasoning fails to consider.
PT106 S1 Q9 — Identify why the argument's reasoning is questionable.
PT106 S1 Q19 — Identify why the argument's reasoning is questionable.
PT106 S1 Q25 — Determine how Engle interprets McKinley's remarks.
PT106 S3 Q2 — Identify the criticism the argument is most open to.
PT106 S3 Q5 — Identify the flaw in Maurice's attempted refutation of Jane.
PT106 S3 Q20 — Find the choice that does not describe a flaw in the host's reasoning.
PT107 S1 Q7 — Describe a flaw in the skeptic's reasoning.
PT107 S1 Q14 — Identify the possibility the prosecutor's reasoning overlooks.
PT107 S1 Q17 — Identify the grounds for criticizing the argument's reasoning.
PT107 S4 Q14 — Identify the grounds for criticizing the plant manager's argument.
PT107 S4 Q18 — Describe an error in the argument's reasoning.
PT107 S4 Q25 — Identify what makes the argument's reasoning questionable.
PT108 S2 Q2 — Identify the strongest criticism of John's reasoning.
PT108 S2 Q6 — Identify the possibility the news item's argument ignores.
Flaw questions, briefly
What is a Flaw question on the LSAT?
Identify the reasoning error. It is one of the 18 Logical Reasoning question types in LSAT Academy's classification.
How many Flaw questions are in PrepTests 101–159?
There are 448 Flaw questions across PrepTests 101–159: 110 rated easiest (1), 152 rated easy–medium (2), 126 rated hard (3), 60 rated hardest (4).
How do I drill LSAT Flaw questions by difficulty?
Use the free LR Drill Finder at https://www.lsat.academy/drill-finder/flaw — filter the 448 Flaw questions by difficulty (1–4), PrepTest range, and argument structure, then practice them in your own LawHub materials.