Title: LSAT (Demo) / Logic & Conditionals
Tags: demo logic-and-conditionals lsat

Question: If A is true, then B is true. A is true. Which follows?
Explanation: Modus ponens.
Other fields (not shown on cards):
Choices: B is true.
B is false.
A is false.
Nothing follows.
Correct: A

Question: If P, then Q. Q is false. Which follows?
Explanation: Modus tollens: denying Q denies P.
Other fields (not shown on cards):
Choices: P is true.
P is false.
Q is true.
Nothing follows.
Correct: B

Question: All dogs are animals. Some animals are pets. Can we conclude that all dogs are pets?
Explanation: "Some animals are pets" doesn't place dogs among the pets; the conclusion is invalid.
Other fields (not shown on cards):
Choices: Yes, it follows.
No, it does not follow.
Only if all pets are animals.
Only if some dogs are animals.
Correct: B

Question: At least one of X or Y is true. X is false. Which follows?
Explanation: If at least one holds and X doesn't, Y must.
Other fields (not shown on cards):
Choices: Y is true.
Y is false.
Both are true.
Nothing follows.
Correct: A

Question: If you study, you pass. You did not pass. Which follows?
Explanation: Contrapositive: not passing means you did not study.
Other fields (not shown on cards):
Choices: You studied.
You did not study.
You will study next time.
Nothing follows.
Correct: B

Question: All squares are rectangles. Figure F is not a rectangle. Which follows?
Explanation: If every square is a rectangle, anything that isn't a rectangle can't be a square.
Other fields (not shown on cards):
Choices: F is a square.
F is not a square.
F is a rectangle.
Nothing follows.
Correct: B