- UID
- 1488794
- 在线时间
- 小时
- 注册时间
- 2021-3-17
- 最后登录
- 1970-1-1
- 主题
- 帖子
- 性别
- 保密
|
Q:
(1) DS: z>0, xz<0? a. xz=3x b. xz=-3x -------選了a
(2) (x-2y)^2=4, (x+2y)^2=8, xy=? -------選了1/2
(3) 一個表 1-5:7, 6-10:4, 11-15:3, 16-20:6, 問maximum range of the average=?
思路:min average = (1*7+6*6+3*11+16*6)/20=8, max average = (5*7+10*4+15*3+20*6)/20=12, range=4應該對的
(4) DS: 一個直角三角形 每邊畫一個半圓 求semi circle surface? a. a^2+b^2+c^2=某數 b. c^2=某數 -------選了d
(5) DS: investment 40% in bond + 60% in stock, stock 好像獲利8%, 問bond獲利>stock獲利?a. invested amount=xxx b. bond 獲利6%(? -------選了b
(6) |nx-8| <= 4, 問有幾個n使等式有exactly 2 positve integer solutions? -------選了2
(7)一rectangle box interior length=x*y*z, 被厚度1的plastic包住,問plastic volume? -------選了2(xy+yz+xz+2x+2y+2z+4)
(8) 某分數1/d=0.x37, (d-1)/d 的 hundrendth digit=? -------選了6
(9) cube M 邊長是cube X 2倍,問cube M surface area 是X幾倍?-------選了4
(10) 五個數排列abcde, a<b<c<d<e, average=80 e=40, 問maximum medium? -------選了18
(11) 1-20 positive integers, probability(取出odd/prime)機率?13579...+2=11個數-------選了11/20
(12) 溶液X,含75% water+25% M, 問要倒掉多少公升的X ""溶液"" 再加入多少公升的M才會使water佔50%? -------選了3公升好像
(13) investment=x, interest=c percent, tax rate=z percent, 問tax on interest? -------選了xcz/10000好像
(14) DS: 字母忘了,隨便填上的,問g+o=? a. m+i=0好像 -------反正選了a, 只是把加法順序掉了一下
+ | a | b | c | d | g | h | i | e | j | k | l | f | m | n | o | (15) 一三角形, 角B=60度,角C=45度,AB邊=10, 問AC=? -------選了5根號6(16) 有一个工厂要供货4000还是5000units,有3000units可以从inventory里面拿,或者是每天生产70units,求从inventory里面拿的多还是生产的多
a)生产天数小于6 weeks
b)生产天数大于4 weeeks -------算了一下選了a 跟jj不太一樣
zuowen:
Hot Cup Cafe 六個月前launch了customer feed back website, 並說這website link is widely printed at every receipt in the cafe, so customers should not have difficulty finding it. 又說到現在賣了300,000 drinks, but only received 178 complaints + 56 suggestions, 說明overall most of the customers are satisfied with their services/products。結論:咱們服務超級棒棒,no need for evaluating and improving!
CR: 好多jj都有了 補充一個
有一種clearing fish, 他會幫client fish 洗澡什麼的, 然後自己還有一個clearing station。科學家就假設了,他們覺得這種魚不會服務他們的predator的,畢竟non-predator比較abundant之類的。BUT實驗證實,他們不但會服務predator,還會優先服務(就是predator客人來得時候,他會放下手邊的non-predator跑去服務predator)問解釋?
選了predators will not then deter other fish
其他選項都是些無關的 說什麼體型大小 年紀 常不常來光顧
|
|