AMC8 2008

AMC8 2008 · Q3

AMC8 2008 · Q3. It mainly tests Patterns & sequences (misc).

If February is a month that contains Friday the $13$th, what day of the week is February $1$?

如果二月包含星期五的 $13$ 号，那么二月 $1$ 号是星期几？

(A) Sunday 星期日

(B) Monday 星期一

(D) Thursday 星期四

(E) Saturday 星期六

Answer

Correct choice: (A)

正确答案：（A）

Solution

Answer (A): A week before the $13^{th}$ is the $6^{th}$, which is the first Friday of the month. Counting back from that, the $5^{th}$ is a Thursday, the $4^{th}$ is a Wednesday, the $3^{rd}$ is a Tuesday, the $2^{nd}$ is a Monday, and the $1^{st}$ is a Sunday.

答案（A）：$13^{th}$ 的前一周是 $6^{th}$，也就是这个月的第一个星期五。从那天往前推，$5^{th}$ 是星期四，$4^{th}$ 是星期三，$3^{rd}$ 是星期二，$2^{nd}$ 是星期一，而 $1^{st}$ 是星期日。

Topics

LM.002 Patterns & sequences (misc)