[計量] 請教幾題印度機經
9. If the Arithematic mean of a list of 65 items is 'p' and arithematic mean
of a list of 92 items 'n'. When the the two lists are combined the average
mean is 84 then what is the value of p/n?
A number line is given in which three pionts are given as n, n+2, -n+2 on a
number scale.
Col A: -n+2
Col B: 4
Given that the range of 6 consecutive positive numbers is 6.8 and of 7
consecutive numbers is 13.2. If none of these numbers in the two groups are
same, what would be the range of the 13 numbers?
There 20 students in a class, half of the students are boys. If 7 members
should be selected out... and of which if 6 are girls find the probability
that the 7th member is also a girl?
請教要從何解答
感謝各位的幫忙~~~ 謝謝
--
※ 發信站: 批踢踢實業坊(ptt.cc)
◆ From: 123.195.62.214
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)：
GRE 近期熱門文章
PTT職涯區 即時熱門文章
120
204