AMC10 2015 B

AMC10 2015 B · Q6

AMC10 2015 B · Q6. It mainly tests Casework, Logic puzzles.

Marley practices exactly one sport each day of the week. She runs three days a week but never on two consecutive days. On Monday she plays basketball and two days later golf. She swims and plays tennis, but she never plays tennis the day after running or swimming. Which day of the week does Marley swim?

Marley 每周每天练习一种运动。她每周跑步三天，但从不连续两天跑步。周一她打篮球，两天后打高尔夫。她游泳和打网球，但从不连续跑步或游泳后打网球。Marley 每周哪天游泳？

(A) Sunday 星期日

(B) Tuesday 星期二

(D) Friday 星期五

(E) Saturday 星期六

Answer

Correct choice: (E)

正确答案：（E）

Solution

Marley plays basketball on Monday and golf on Wednesday. Because she cannot run three of the four consecutive days between Thursday and Sunday, she must run on Tuesday. From Thursday to Sunday she runs, swims, and plays tennis, but she cannot play tennis the day after running or swimming. So she must play tennis on Thursday. She must swim on Saturday, and run on Friday and Sunday, so that she does not run on consecutive days.

Marley 周一打篮球，周三打高尔夫。因为她不能在周四到周日这四个连续日子中跑三天，所以她必须在周二跑步。从周四到周日她跑步、游泳和打网球，但她不能在跑步或游泳后打网球。所以她必须在周四打网球。她必须在周六游泳，并在周五和周日跑步，这样就不连续跑步了。

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