展开全部

题目列表

题目内容
The top surface of a certain 1-inch-thick oak board is 8 inches wide and has an area of 960 square inches. What is the price of this board? (1 foot=12 inches)
For the 6-inch-wide boards listed, which of the following is closest to the ratio of the price per linear foot of the least expensive type of board to the price per linear foot of the most expensive type of board?
The price of one maple board that is 8 inches wide and n feet long is $1.50 less than the price of 2 maple boards that are each 4 inches wide and n feet long. What is the value of n?
The different committees consist of 8, 10 and 13 people, respectively. If N is the total number of different people in the 3 committees combined, what is the least possible value of N?
An urn contains 4 red balls, 8 green balls and 2 yellow balls. Five balls are randomly selected WITH replacement from the urn. What is the probability that 1 red ball, 2 green balls, and 2 yellow balls will be selected?

Give your answer as a fraction.


The table above consists of 10 rows and 10 columns. Each entry in the table is either a zero or a one. A zero is to be selected at random from the table. What is the probability that the zero selected will be in a row with an odd number of zeros and in a column with an odd number of zeros?

Give your answer as a fraction.
The reciprocal of x-2 is x+3. What is the product of all the possible values of x?
$$x < x^{3} < x^{2}$$

Quantity A

$$x^{5}$$

Quantity B

$$x^{7}$$


In triangle ABC, the length of side AB is 13, the length of side AC is 15, and the length of side BC is 14. What is the length of the height that corresponds to the base BC?
A box contains 100 purple balls, 100 red balls, and 100 white balls. What is the minimum number of balls that must be chosen to ensure that at least 4 of the balls chosen have the same color?
In 1990 in neighborhood V, $$\frac{1}{3}$$ of the foreign-born population whose region of origin was Asia came from China. Approximately what fraction of the entire foreign-born population in neighborhood V came from China?
A list of the names of the people of the entire 1990 foreign-born population in neighborhood V was generated, with each person's name appearing once.The names of 2 different people will be randomly selected from the list. Which of the following is closest to the probability that both names selected will be names of people whose region of origin was "Other"?
In 1990 approximately what percent of the total population of neighborhood V was foreign-born with Europe as region of origin?
List S: 1, 2, 3, k, 2k

If k < 2, which of the following numbers could be the median of the five numbers in list S?

Indicate all such numbers.
A catalog company had a special sale that offered a discount of $25 off each $75 in merchandise ordered. A shipping charge of 10 percent was calculated before the discount was taken, and sales tax of 5 percent was calculated after the discount was taken. If Jason ordered $300 in merchandise and no tax was calculated on shipping charges, what was the total charge for Jason's order?
A dealer's gross profit on the sale of a car is defined as the selling price of the car minus its cost to the dealer. A car dealer sold n cars for s dollars each. If the dealer's total gross profit was p dollars, what was the dealer's average (arithmetic mean) cost per car, in dollars?
What percent of all the presidents and vice presidents are less than 50 years old?
For how many of the organizations does the age of the president exceed the age of the corresponding vice president by 15 years?
Set S={2, 4, 6}

Set T={2, 4, 6, 8, 10, 12}

How many different sets M, other than S and T, can be formed such that S is a subset of M and M is a subset of T?
In a list of 25 different numbers, the average (arithmetic mean) of all the numbers greater than the median is 200, and the average of all the numbers less than the median is 100. If the average of the 25 numbers is an integer, which of the following could be the value of the median?

Indicate all such values.

共收录:

25000 +道题目

196本备考书籍

最新提问