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Your first 20 questions, in the order a tutor would teach them. Read the teaching note on each one before you answer. No timer. Nobody is grading you.
The park is dirty, the benches are broken, and the fountain has not worked in a year. The city should fix the park.
The main point of the argument is that
The first three sentences list problems. The last sentence gives the recommendation: that is the conclusion.
Teaching note: Start here: the conclusion is the claim everything else supports. Look for recommendation words like "should."
All cats in the shelter are vaccinated. Whiskers is a cat in the shelter.
What must be true?
Whiskers belongs to the group, and everything in the group is vaccinated. Direct and simple.
Teaching note: "All X are Y" plus "this is an X" always gives "this is a Y." This pattern shows up constantly.
My neighbor's car is red and it broke down, so red cars must be unreliable.
The reasoning is flawed because it
One car cannot prove anything about all red cars. One example is never enough for a general claim.
Teaching note: Flaw questions ask "what went wrong?" Here the sample is one car. Watch for conclusions that outrun their evidence.
If it rains, the game is canceled. The game was not canceled.
What follows?
Rain guarantees cancellation. No cancellation means no rain. This move is called the contrapositive.
Teaching note: If P then Q. Not Q, so not P. Learn this move cold; it appears in every section.
Homework takes hours, cuts into sleep, and rarely improves test scores. Schools should cut back on homework.
The main conclusion is that
The complaints are premises. "Schools should cut back" is the recommendation they support.
Teaching note: Premises give reasons; the conclusion is the point. "Should" usually marks it.
The library added weekend hours and visits rose 20 percent. The director says the new hours caused the rise.
Which of the following, if true, most strengthens the director's claim?
The increase happened exactly where the change was made. That match is strong evidence of cause.
Teaching note: To strengthen a causal claim, tie the effect to the exact place or time of the cause.
A juice company says its juice prevents colds because it has vitamin C, and vitamin C supports immunity.
Which of the following, if true, most weakens the claim?
The claim needs the vitamin C to do real work. If the dose is too small to matter, the mechanism collapses.
Teaching note: To weaken, break the link between the evidence and the conclusion. Here the dose breaks the link.
No dogs are allowed in the restaurant. Max is in the restaurant.
What must be true?
If Max were a dog, he would not be allowed in. He is in, so he is not a dog. Contrapositive again.
Teaching note: Same move as question 4, in new clothes. The LSAT repeats a small set of moves; learn to spot them.
This phone must be the best. Every celebrity I follow uses one.
The flaw is that the argument
Celebrities are paid to be seen with products. Their use says nothing about which phone is best.
Teaching note: Ask: does the evidence actually prove the claim? Celebrity endorsements prove popularity, not quality.
The new bridge will reduce traffic because drivers will use it instead of the old road.
The argument assumes that
If only a few drivers switch, traffic barely changes. The conclusion needs a meaningful number of switchers.
Teaching note: Necessary assumption = the argument dies without it. Negate B: if almost nobody switches, no traffic relief.
Plastic bags litter the streets, clog drains, and harm wildlife. The town should ban them.
The main point is that
Three problems listed, one recommendation. The recommendation is the conclusion.
Teaching note: A list of bad facts followed by "should" is the classic premise-conclusion shape.
Every student who studied passed the test. Jamal did not pass the test.
What follows?
Studying leads to passing. Jamal did not pass, so he did not study. Contrapositive once more.
Teaching note: Notice the pattern repeating. On the real test, speed comes from recognizing the move instantly.
A gym claims its new program builds strength, citing members who lifted heavier weights after three months.
Which of the following, if true, most strengthens the claim?
A comparison group with no gains points to the program as the difference. Without it, the gains could come from anything.
Teaching note: Comparison groups are the backbone of causal evidence. Look for "while others did not."
Crime fell after the city hired more police, so the hiring caused the drop.
Which of the following, if true, most weakens the argument?
If crime fell everywhere, something broader than this city's hiring explains it. The local cause is undercut.
Teaching note: The classic weakener: the effect happened without the supposed cause.
Ana: "We should order pizza because it is cheap." Ben: "Pizza is cheap, but half the team hates it, so we should order tacos."
Ana and Ben disagree about whether
Ben agrees pizza is cheap (A is conceded). They disagree on what to order.
Teaching note: Find what they say opposite things about. Conceded points are traps, not answers.
Either you support the new law or you do not care about safety. You do not support it, so you do not care about safety.
The reasoning is flawed because it
Someone can oppose the law and still care about safety, perhaps favoring a different approach. Two boxes are assumed, not proven.
Teaching note: "Either/or" arguments are guilty until proven innocent. Always look for the third option.
The cake will be ready by noon. It needs one more hour in the oven, and it is 11 a.m.
Which of the following, if assumed, makes the conclusion follow logically?
B closes every gap: the arithmetic and the "nothing goes wrong" condition. Then the conclusion is guaranteed.
Teaching note: Sufficient assumption = the missing piece that makes the logic airtight. Bridge every gap.
You say organic food is healthier, but you eat fast food every day. Your habits contradict your claim.
The argument proceeds by
The speaker does not refute the claim about organic food. It attacks the speaker's consistency instead.
Teaching note: Method questions ask "how did they argue?" not "are they right?" Describe the move.
Some of the paintings in the gallery are forgeries. All forgeries will be removed this week.
What must be true?
Some paintings are forgeries, and all forgeries get removed. So some paintings in the gallery will be removed.
Teaching note: "Some" plus "all" chains work the same as "all" plus "all." Track the overlap.
All birds have feathers. A robin is a bird. Therefore, a robin has feathers.
Which of the following uses the same pattern?
Same three steps: all A are B, X is A, X is B. A reverses the second premise; C argues backward.
Teaching note: Match the structure exactly: quantifiers, order, and direction all matter.
A free diagnostic shows your starting score, then a study plan tells you what to work on next.
Last updated October 12, 2026