展开全部

题目列表

题目内容
The four-digit integer $$8,82X$$ is a multiple of 9, where $$X$$ is the units digit.

Quantity A

$$X$$

Quantity B

2


Every positive integer can be represented uniquely in base 9 by

$$(c_n......c_2 c_1 c_0)_9$$= $$c_n(9^{n})+......c_2(9^{2})+c_1(9^{1})+c_0(9^{0})$$

for some nonnegative integer $$n$$, where the coefficient $$c_i$$ of $$9^{i}$$ is one of the digits from 0 to 9 for $$0 ≤ i ≤ n$$, but $$c_n ≠ 0$$. For example, $$163=(201)_9$$ because $$163= 2(9^{2})+0(9^{1})+1(9^{0})$$.

Which of the following is equal to the product of the three integers $$(12)_9, (13)_9$$, and $$(14)_9$$ ?
For how many of the types of transportation in the graphs was the number of ton-miles transported in 1991 more than 4 times the number transported in 1941?
If the total number of ton-miles that were transported increased at a constant rate from 1941 to 1991 approximately what was the total number of ton-miles that were transported in 1986?
From 1941 to 1991, approximately what was the percent increase in the number of ton-miles transported by railway?
A certain rectangle has perimeter 60.

Quantity A

The length of a diagonal of the rectangle

Quantity B

20


$$0 < a < b < c$$

Quantity A

The standard deviation of the seven numbers $$-c, -b, -a, 0, a, b, c$$

Quantity B

The standard deviation of the seven numbers $$-c^{2}, -b^{2}, -a^{2}, 0, a^{2}, b^{2}, c^{2}$$




Quantity A

The standard deviation of data set Ⅰ

Quantity B

The standard deviation of data set Ⅱ


Quantity A

The remainder when $$35^{12}+63^{17}$$ is divided by 14

Quantity B

3




The interior of the figure shown is divided into two squares and three triangles.

Quantity A

The measure of angle x

Quantity B

56


$$N$$ is a two-digit integer. The units digit of $$N^2$$ is 9.

Quantity A

The units digit of N

Quantity B

6


Of the 45 candidates for a certain job, 20 are married. Of the candidates who are married, 8 do not have a PhD. Of the candidates who are not married, 15 have a PhD.

Quantity A

The number of candidates who do not have a PhD

Quantity B

18




The tables show the prices of the desserts and beverages on Diner X`s late-night snack menu. How many different combinations of 1 dessert and 1 beverage can be purchased at Diner X if the total price for the 2 items must be less than or equal to $4.40?
List R: 2, 4, 7, 10, 12

List T: 2, 5, 7, 9, 12

Quantity A

The standard deviation of the numbers in list R

Quantity B

The standard deviation of the numbers in list T




RSTW is a parallelogram with x < 90.

Quantity A

The area of the region enclosed by RSTW

Quantity B

50


The average (arithmetic mean) of 12 consecutive odd integers is 312.

Quantity A

The least of the 12 consecutive odd integers

Quantity B

301


The number 24 has the property that it is divisible by its units digit, 4. How many of the integers between 10 and 70 are divisible by their respective units digits?

共收录:

25000 +道题目

198本备考书籍

最新提问