[問題] GWD-6-19 Math
If 2 different representatives are to be selected at random from a group of
10 employees and if p is the probability that both representatives selected
will be women, is p > 1/2?
(1) More than 1/2 of the 10 employees are women.
(2) The probability that both representatives selected will be men is less
than 1/10.
答案是E
(1) 我知道女性至少6個, 所以P= C(6,2) / C(10,2) = 1/3 -->insufficient
請問(2)該如何解呢?
謝謝!
--
※ 發信站: 批踢踢實業坊(ptt.cc)
◆ From: 140.112.25.108
討論串 (同標題文章)
以下文章回應了本文：
完整討論串 (本文為第 1 之 2 篇)：
GMAT 近期熱門文章
PTT職涯區 即時熱門文章
