展开全部

题目列表

题目内容
The median of the set of numbers $$s_{1}$$ < $$s_{2}$$ < $$s_{3}$$ < $$s_{4}$$ < $$s_{5}$$ < $$s_{6}$$ < $$s_{7}$$ is 130.

Quantity A

The median of $$s_{1}$$, $$s_{3}$$, $$s_{5}$$, $$s_{6}$$, $$s_{7}$$

Quantity B

130


A certain experiment has exactly two mutually exclusive outcomes with probabilities p and 2p.

Quantity A

p

Quantity B

1-p




(a+b)(c+d)=0 c≠-d

Quantity A

-a

Quantity B

b




ABDE is a rectangle.

Quantity A

The sum of the areas of triangular regions ABC and CDE

Quantity B

The area of triangular region ACE


Which student wrote the longest articles as measured by the average (arithmetic mean) number of words per article?
The greatest number of words read by a student exceeded the least number of words read by a student by approximately what percent?
Of all the articles read, students C, D, and E read the same 2 articles. In addition to these 2 articles, C and D read the same 10 articles, C and E read the same 5 articles, and D and E read the same 7 articles. How many articles were read by at least one of the three students, C, D, and E?
For a positive integer n, the remainder is 3 when it is divided by 7, and the remainder is R when it is divided by 4.

Quantity A

R

Quantity B

2


A wall in a museum is covered by 60 flat rectangular panels. If the dimensions of each panel are 4 feet by 7.5 feet, what is the total area, in square yards, of the panels? (Note: 1 yard=3 feet.)


The figure above represents the floor plan of a basement in which all the walls meet at right angles. The measurements shown in the floor plan, including the two sides of length x, are in centimeters. The floor plan is drawn using a scale of 1 centimeter to 1.5 meters. If the perimeter of the floor is 39.4 centimeters, approximately what is the area, in square meters, of the basement floor?
$$a_{1}$$, $$a_{2}$$, $$a_{3}$$, ......, $$a_{n}$$, ......

The sequence of numbers shown is defined by $$a_{1}$$=4, $$a_{2}$$=5, and $$a_{n}$$=2$$a_{n-1}$$+$$a_{n-2}$$ for all integers greater than 2. Which of the following is a number in the sequence?
x and y are integers.

4 ≤ x ≤ 13

4 ≤ y ≤ 13

Quantity A

The least possible value of $$\frac{3x-4}{y+7}$$

Quantity B

$$\frac{2}{5}$$




If x and y are positive integers and x + y = 8x + 22, which of the following must be true?
The population of the United States was approximately 106 million in 1920 and approximately 249 million in 1990. Based on these population estimates, approximately how many million pounds greater was the total annual consumption of cheese in 1990 than in 1920?
Let a, b, and c represent the ranges of the annual per capita consumption of fresh vegetables, poultry, and ice cream, respectively, for the eight years shown. Which of the following statements is true?


Quantity A

x

Quantity B

y


The terms $$a_n$$ of a certain sequence are defined by $$a_n=\frac{3}{n(n+1)}$$ for all integers n ≥ 1.

Quantity A

The sum of the first 100,000 terms of the sequence

Quantity B

3






The average (arithmetic mean) of 6 measurements is n. When a statistician discards one of the measurements, the average of the remaining measurements is n-2. What is the value of the discarded measurement, in terms of n?
When positive integer m is divided by 6, the remainder is 4. When positive integer p is divided by 6, the remainder is 5. What is the remainder when the product mp is divided by 6?
A student has a box containing only two kinds of bills: 6 Canadian dollar bills and y Australian dollar bills. If more than $$\frac{3}{8}$$ of the bills in the box are Australian dollar bills, what is the least number of bills that the student could have in the box?

共收录:

25000 +道题目

199本备考书籍

最新提问