1987 AMC 8 第 17 题
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17.
艾比、布雷特、卡尔和达娜坐在一排编号为 到 的四个座位上。乔看着他们说：“布雷特挨着卡尔。”“艾比坐在布雷特和卡尔之间。”然而乔的每一句话都是假的。布雷特实际坐在 号座位。谁坐在 号座位？
Abby, Bret, Carl, and Dana are seated in a row of four seats numbered to Joe looks at them and says: “Bret is next to Carl.” “Abby is between Bret and Carl.” However, each one of Joe’s statements is false. Bret is actually sitting in seat Who is sitting in seat
艾比
Abby
布雷特
Bret
卡尔
Carl
达娜
Dana
信息不足，无法确定
There is not enough information to be sure
答案：D
小提示：
“布雷特挨着卡尔”是假的，所以卡尔不在 号或 号座位；卡尔只能在 号座位
“Bret is next to Carl” is false, so Carl is not in seat or seat the only remaining seat for Carl is seat
大提示：
卡尔在 号座位后，“艾比在布雷特和卡尔之间”是假的，所以艾比不能在 号座位；把艾比放进最后一个可行座位，再看剩下谁
Once Carl is in seat “Abby is between Bret and Carl” is false, so Abby cannot be in seat place Abby in the last open seat and see who is left
解答：
布雷特在 号座位。因为“布雷特挨着卡尔”是假的，卡尔不在 号或 号座位，所以卡尔必须在 号座位。
布雷特（ 号）和卡尔（ 号）之间的座位是 号。因为“艾比在布雷特和卡尔之间”是假的，艾比不在 号，所以艾比必须在 号。
因此达娜坐在 号座位。
所以正确答案是 D。
Bret is in seat Since “Bret is next to Carl” is false, Carl is not in seat or seat so Carl must be in seat
The seat between Bret (seat ) and Carl (seat ) is seat Since “Abby is between Bret and Carl” is false, Abby is not in seat so Abby must be in seat
That leaves Dana in seat
Thus, the correct answer is D .
其他年份的第 17 题
- 1985 AMC 8
- 1986 AMC 8
- 1988 AMC 8
- 1989 AMC 8
- 1990 AMC 8
- 1991 AMC 8
- 1992 AMC 8
- 1993 AMC 8
- 1994 AMC 8
- 1995 AMC 8
- 1996 AMC 8
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- 1998 AMC 8
- 1999 AMC 8
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