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题目内容
If 20 were to be added to only one of the five factors in the product (173) (113) (131) (293) (239), to which factor must it to be added so that the resulting product is as great as possible?
w(x+y+z)=wx+wy+z

Quantity A

z

Quantity B

0
1 < r < s < t, which of the following is closest to r*s*t ?
x > 0

y < 0

Quantity A

$$(x-y)^{2}$$

Quantity B

$$x^{2}+y^{2}$$
a≠ 0

Quantity A

$$(a+\frac{1}{a})^{2}$$

Quantity B

2
$$x$$ and $$y$$ are positive numbers.

Quantity A

$$\sqrt{x}$$+$$\sqrt{y}$$

Quantity B

$$\sqrt{x+y}$$
x+y > 1

Quantity A: $$x^{2}$$+$$y^{2}$$

Quantity B: 1
x and y are integers and $$x^{2}$$-$$y^{2}$$=27

Quantity A

x

Quantity B

10
What is the value of $$\frac{0.99999999}{1.0001}$$ - $$\frac{0.99999991}{1.0003}$$?
x+y=7

Quantity A

x+2y

Quantity B

y+2x
3x+3 < 2y

Quantity A

x

Quantity B

y
z=x-2y

Quantity A

The average of x and z

Quantity B

x-y
xy+y < 0

Quantity A: x

Quantity B: y
0 < x < 1, n > 0

Quantity A

$$\frac{n}{x}$$

Quantity B

n
x is a real number

Quantity A

$$\frac{x}{x+1}$$

Quantity B

1
Quantity A:$$(2m+1)^{2}$$

Quantity B:$$(2(m+1))^{2}$$
2 < x < 5,$$\frac{1}{10}$$ < y < $$\frac{1}{5}$$

Quantity A: x+y

Quantity B: $$\frac{1}{x}$$+$$\frac{1}{y}$$
$$x$$, $$y$$ and $$z$$ are positive numbers

Quantity A

The square of the average (arithmetic mean) of $$x$$, $$y$$ and $$z$$

Quantity B

The average (arithmetic mean) of $$x^{2}$$,$$y^{2}$$and $$z^{2}$$
0 < a< b < 1 < c < d, c and d are both integers

Quantity A

$$a^{c-d}$$

Quantity B

$$b^{d-c}$$
0 < x < y

Quantity A

x+$$\frac{1}{x}$$

Quantity B

y+$$\frac{1}{y}$$

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25000 +道题目

7本备考书籍

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