LSAT (Law School Admission Test)Analytical ReasoningMedium
A restaurant is offering a special 'build-your-own' platter with five choices from a list of seven ingredients: Feta, Grapes, Hummus, Olives, Pitas, Quinoa, and Tzatziki. The following conditions apply: 1. If Feta is chosen, then Pitas must also be chosen. 2. If Olives are chosen, then Grapes cannot be chosen. 3. Hummus and Tzatziki cannot both be chosen. 4. Quinoa can only be chosen if Grapes are also chosen. Which of the following is a possible combination of five ingredients?
- AFeta, Hummus, Pitas, Quinoa, Tzatziki
- BFeta, Grapes, Olives, Pitas, Quinoa
- CGrapes, Hummus, Olives, Pitas, Tzatziki
- DFeta, Grapes, Pitas, Quinoa, Tzatziki
Show answer & explanationAnswer & explanation
Correct answer: D. Feta, Grapes, Pitas, Quinoa, Tzatziki
Let's check option D: Feta (implies Pitas, rule 1 - satisfied). Grapes (rule 2 - Olives not chosen, satisfied). Pitas (chosen, satisfied). Quinoa (implies Grapes, rule 4 - Grapes chosen, satisfied). Tzatziki (rule 3 - Hummus not chosen, satisfied). All rules are satisfied.
Why the other options are wrong
- A. Quinoa is chosen, but Grapes are not chosen, violating rule 4.
- B. Olives and Grapes are both chosen, violating rule 2.
- C. Hummus and Tzatziki are both chosen, violating rule 3.
Conditional Grouping
Rules that determine which elements can or must be selected together, or which cannot be selected together.
- Often uses 'if-then' or 'either-or' structures.
- Involves selecting a subset from a larger group.
- Violation of any condition makes the group invalid.
Memory trick: Choices Are Grouped By Condition's Logic.