练习题 · 英文原题 · SEL-TS-TST-11
Chloe, Dimitri, Emi, Farah and George each have one locker in a row. The lockers are numbered 1 to 5 from left to right.
- Emi's locker is number 3.
- Chloe's locker number is one more than Farah's.
- Dimitri's locker is not next to Emi's.
- George's locker number is lower than Farah's.
Whose locker is number 2?
查看答案与解析(英文)
答案: A
Answer: A (George)
- Emi has locker 3. Lockers 2 and 4 are next to it, so Dimitri has locker 1 or 5.
- Farah and Chloe need two lockers side by side with Chloe one higher, and locker 3 is taken. So Farah–Chloe is 1–2 or 4–5.
- Check Farah 1, Chloe 2: George would need a number lower than 1. Impossible.
- Check Farah 4, Chloe 5: Dimitri must take 1, so George has 2, and 2 is lower than 4. All clues are met.
- The only arrangement is Dimitri 1, George 2, Emi 3, Farah 4, Chloe 5.
Why the other options are wrong
- B (Dimitri): Locker 2 is next to Emi's locker, and Dimitri's is not next to Emi's.
- C (Farah): If Farah had locker 2, Chloe would need locker 3, which is Emi's.
- D (Chloe): If Chloe had locker 2, Farah would have locker 1 and George would have no lower number left.



