- 精华
- 0
- 积分
- 2420
- 经验
- 2420 点
- 威望
- 241 点
- 金钱
- 241 ¥
- 魅力
- 241
|
这道Math的英文看不懂也不会解,求帮忙
1.a score of 58 was 2 standard deviations below the mean 这是什么意思
2.of the 60 animals on a certain farms,2/3 are either pigs or cows
请问either……or…… 意思是 2/3 或者是pig 或者是cows (包不包括两者都是的意思?)
就像咱们学的数学 A或B 的含义是 或A或B或(A和B)
3.All of the stocks on the over-the counter market are designated by either a 4-letter ot a 5-letter code that is created by using the 26 letters of the alphabet.Which of the following gives the max number of different stocks that can be disignated with these codes?
Ans: 27(26^4)
这题没看懂?
谢谢大牛 |
|