[問題] 月曆上的日期
某士兵用望遠鏡觀察時發現,有個房子的某房間掛著月曆,月曆上有黑色的字(如下圖)
24/31
請問,這個月份的一日是星期幾?
puzzlez
2007/12/14
--
※ 發信站: 批踢踢實業坊(ptt.cc)
◆ From: 123.194.17.138
推
12/14 13:31, , 1F
12/14 13:31, 1F
推
12/14 13:33, , 2F
12/14 13:33, 2F
推
12/14 13:36, , 3F
12/14 13:36, 3F
推
12/14 13:40, , 4F
12/14 13:40, 4F
推
12/14 13:51, , 5F
12/14 13:51, 5F
→
12/14 13:51, , 6F
12/14 13:51, 6F
→
12/14 13:53, , 7F
12/14 13:53, 7F
→
12/14 13:53, , 8F
12/14 13:53, 8F
推
12/14 13:55, , 9F
12/14 13:55, 9F
→
12/14 13:56, , 10F
12/14 13:56, 10F
推
12/14 14:28, , 11F
12/14 14:28, 11F
推
12/14 16:03, , 12F
12/14 16:03, 12F
推
12/14 17:51, , 13F
12/14 17:51, 13F
推
12/14 22:43, , 14F
12/14 22:43, 14F
→
12/15 06:28, , 15F
12/15 06:28, 15F
→
12/15 06:29, , 16F
12/15 06:29, 16F
推
12/15 18:46, , 17F
12/15 18:46, 17F
→
12/15 19:06, , 18F
12/15 19:06, 18F
推
12/15 22:13, , 19F
12/15 22:13, 19F