小弟來計算 第一下就撞到風化珠的機率 (剛剛不小心變成私信 請原po見諒)
先作以下定義
1. 30顆珠被當作起手珠的機率都一樣
2. 盤面當時沒有未消除的風化珠
3. 起手珠絕對不會是當回合的風化珠
4. 玩家有可能第一步就斜轉
P(第一步撞風化珠)=1/30 *[ ( 26/29*0 + 3/29*1/3 )*4
+( 24/29*0 + 5/29*1/5 )*14
+( 21/29*0 + 8/29*1/8 )*12 ]
=1/29 =0.0344 =3.44%
算式說明
1/30 是選起手珠的機率
第一個括號是四角落起手 所以括號後面乘4
26/29是系統選風化珠的機率 *0是因為這狀況下風化珠不在第一步可走到的地點
所以不會撞珠
3/29是系統選風化珠的機率 有可能撞珠 *1/3是因為玩家有三方向可以走
第二個括號是邊緣起手
第三個括號是中央起手
※ 引述《hugo840412 (雨果)》之銘言:
: 在關卡裡
: 如果遇到有風化珠 轉的怪物
: 你一起手,就會隨機風化一個位置
: 然後,建議起手時不要斜轉
: 因為我在火式神的關卡裡那關風化
: 一起手斜轉,直接撞風化扣3000
: 還完全沒消到珠… :3
: 估計神魔在隨機出風化時
: 只能偵測你起手那顆的上下左右
: 不包含斜的@@
: 有其他人遇過相同情形嗎?~~
--
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對...就是1/29
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那個 *0 的對象 是整個分數 不是只有分母
(乘跟除優先順序一樣 從左到右計算 所以我的寫法是正確的優)
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不懂你4/29 6/29 7/29的意思??
※ 編輯: lish (114.47.103.45), 09/19/2014 02:31:24
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