Re: [計量] 被搞昏頭了,求救
謝謝兩位的解答
原來這麼直觀
我還去畫那些圓圈圈圖
還畫不出來 = =a
※ 引述《KeeperOf7Key (七把鑰匙的主人)》之銘言:
: ※ 引述《aggiemaxie (Maxie)》之銘言:
: : If 55% of a group of people have brown hair and 80% of the same group do
: : NOT have red hair, what fraction of those who do NOT have brown hair have
: : red hair?
: : from pp3....
: : I got confused~@@
: 前面好像有問過不過我也找不到~
: 45%不是棕髮~20%是紅髮~
: 所以是 (20/100) 4
: -------- = -----
: (45/100) 9
--
※ 發信站: 批踢踢實業坊(ptt.cc)
◆ From: 220.134.89.44
討論串 (同標題文章)