推 macro2365 :有暑假真爽 好好珍惜吧 07/21 21:13
→ bjk :^^ 07/21 23:44
推 shinest :原po超可愛^^~ 07/22 02:01
徵人打排球
地點 新店高中 或 陽光公園
徵到三點
我會帶球去，如果你有球也帶過來吧
--
When we toss a coin , we obtain either head or tail. Now we toss a coin 5
times. There are 2^5 possible outcomes. How many of them contain no two
consecutive heads?
--
※ 發信站: 批踢踢實業坊(ptt.cc)
◆ From: 203.70.50.154