Loading Web-Font TeX/Math/Italic
展开全部

题目列表

题目内容
On a bookshelf, Pat arranges 7 different books: 2 history books, 3 philosophy books, and 2 science books. If Pat arranges the books so that the history books are next to each other, the science books are next to each other, and the philosophy books are next to each other, how many different arrangements are possible?
S={1.2, 0.9, 1.3, 1.5}

T={1.2x, 0.9x, 1.3x, 1.5x}

x is a positive number.

Quantity A

The standard deviation of the numbers in set S

Quantity B

The standard deviation of the numbers in set T


If one letter is to be randomly selected from the 7 letters in the word JOHNSON and one letter is to be randomly selected from the 5 letters in the word JONES, what is the probability that the two selections will be the same letter?
Machine A and machine B, working simultaneously and independently at their respective constant rates, processed \frac{3}{4} of the shipment of a certain product in 4.5 hours. Then machine A, working alone at its constant rate, processed the rest of the shipment in 6 hours. How many hours would it have taken machine B, working alone at its constant rate, to process the entire shipment of the product?

How many distinct solutions does the equation |1-|x-215||=1 have?
维度一:词汇能力

qualification----以下哪个意思,常在GRE填空里出现?
Each copy of Magazine X is sold either at the cover price of $3.25 per copy or at the subscription price of $1.75 per copy. The average (arithmetic mean) price of the copies of Magazine X that were sold last month was $2.25 per copy.

Quantity A

The number of copies of Magazine X that were sold last month at the subscription price

Quantity B

Twice the number of copies of Magazine X that were sold last month at the cover price




In quadrilateral ABCD shown, what is the value of x?

Give your answer to the nearest 0.1.
What is the greatest prime divisor of 3^{100}- 3^{97}?
Which of the following is the graph of |x-5| \leq 2?

\frac{51!-50!}{50!-49!}=
Of the people surveyed about the effectiveness of various treatments for insomnia, 65 percent reported that prescription drugs were effective and 48 percent reported that exercise was effective. If 22 percent of those surveyed reported that prescription drugs were effective but did not report that exercise was effective,what percent of those surveyed reported that exercise was effective but did not report that prescription drugs were effective?
unimpressed----以下哪个翻译最合适?
unfounded ---- 以下哪个选项和单词的意思一致?

共收录:

25000 +道题目

240本备考书籍

最新提问

    Get Microsoft Silverlight