[問題] GWD-9-13

[lovekyoko (匹茲堡的天空)]

GWD-9-Q13:
Fact: Asthma, a bronchial condition, is much less common ailment than hay
fever, an allergic inflammation of the nasal passages.
Fact: over 95 percent of people who have asthma also suffer from hay fever.

If the information given as facts above is true, which of the following must
also be true?

A.Hay fever is a prerequisite for the development of asthma

B.Asthma is a prerequisite for the development of hay fever

C.Those who have neither hay fever nor asthma comprise less than 5 percent
of the total population

D.The number of people who have both of these ailments is greater than the
number of people who have only one of them

E.The percentage of people suffering from hay fever who also have asthma is
lower than 95 percent.

答案是E

可是我選C

C的答案不就是第2個fact反過來說嗎  哪裡錯

我怎麼覺得e是在反駁

我想哪想錯囉

謝謝

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(1)問題____   (A)孬(B)奀(C)尖(D)奔
(2) 不離不棄 被當____  (A)盲(B) 臬(C)皂(D)柏
(3) 時機若對  我第一個 ___ (A)加入工會(B)加入大聯盟(C)退休(D)打入WWE
(4)╰(‵◇ ′#)╯代表哪個單字(A)good job (b)Come on (c)fuck u (d) shit
(5) 監督賞可拿到多少賞金(A)3萬鎂(B)一萬鎂(C)2千NT(D)一萬NT


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◆ From: 67.171.108.168
推 giyoshi:Fact1: 氣喘比花粉症還少見 少見個幾百倍.總之much less
→ giyoshi:Fact2:超過95%有氣喘的人 會同時有花粉症
→ giyoshi:我覺得C錯是你不知道 有花粉症的人佔所有人數的多少%
推 AaronT:這是條件機率 把條件機率的公是寫出來你就會確定E一定對了