搜索结果 | GMAT考满分，百万出国党的口碑之选。

GMAT考满分·题库

收录题目9362道

搜索结果共4976条

来源	题目内容
Ready4	If x is an integer, what is the value of $\frac{1}{(x^{5} - 1)}$ ? (1) $x^{2} -4x=0$ (2) $x^{2} < <font color='#FE8080'>1</font>$
Magoosh	In a single Epsilon trial, the probability of Outcome T is $$\frac{1}{4}$$. Suppose a researcher conducts a series of n independent Epsilon trials. Let P = the probability that Outcome T occurs at least once in n trials. Is P > $$\frac{1}{2}?$$Statement #1: n > 3Statement #2: n < 6
PREP07 Test 2	For all numbers a and b, the operation # is defined by a # b = 2a + 2b + 1. What is the value of 6 # 1 ?
	If $1,000 will be deposited in a bank account and I is the dollar amount of interest earned from the original deposit, represented as $${I}={1000\{{({1}+\frac{r}{100})^{n}-{1}}}\}$$, and the annual interest rate is r percent, is $$r > 8$$ percent?(1) The deposit earns a total of $210 in interest in the first 2 years.(2) $$({1}+\frac{r}{100})^{2} >{1.15}$$
	If $$\sqrt x=25$$, then $$x^3-x^2=$$
	A factory worker produced one lot of connecting clips, and initial quality control found that $$\frac{5}{7}$$ of clips in the lot could be used. An assembly plant purchased this lot of clips valuing the lot at $3 per each usable clip. During assembly, it became known that only $$\frac{3}{5}$$ of the clips in the lot were usable. What was price per usable clip that the assembly plant paid for the lot?
PREP07 Test 2	If $1,000 was invested at an annual interest rate of 5.6 percent compounded annually, which of the following represents the amount the investment was worth after 3 years?
Ready4	If $m$ and $n$ are constants, $m > n$ , and $w^{2}-2=(w+m)(w+n)-<font color='#FE8080'>1</font>$ for all numbers $w$ , what is the value of $m$ ?
OG12 OG15 OG16	If arc PQR above is a semicircle, what is the length of diameter $$\overline{PR}$$ ?(1)a = 4(2)b = 1
Ready4	If $2$ different houses are to be selected at random from a group of $12$ houses on a street and if $p$ is the probability that both houses selected will have even address numbers, is $p < \frac{<font color='#FE8080'>1</font>}{2}$ ? (1) More than $\frac{<font color='#FE8080'>1</font>}{2}$ of the $12$ houses have even numbers. (2) The probability that both houses selected will have odd numbers is less than $\frac{<font color='#FE8080'>1</font>}{4}$ .
Ready4	If $\frac{1}{c} - \frac{1}{c + 3} = \frac{1}{c + 5}$ , then c could be
	In township K, $$\frac{1}{5}$$ of the housing units are equipped with cable television. If $$\frac{1}{10}$$ of the housing units, including $$\frac{1}{3}$$ of those that are equipped with cable television, are equipped with video I cassette recorders, what fraction of the housing units have neither cable television nor videocassette recorders?
	The operation x&n for all positive integers n greater than 1 is defined in the following manner: x&n = x raised to the power of x&(n-1). If x&1 = x, which of the following expressions has the greatest value?
OG12 OG15 OG16 OG17	If x and y are integers, is xy even?(1)$$x = y+1$$(2)$$\frac{x}{y}$$ is an even integer.
300难题	Is xy< 6? 1.x< 3 and y< 2. 2.$$\frac{1}{2}$$< x< $$\frac{2}{3}$$and $$y^{2}$$< 64.
190207	a,b,c are integers.1 < a ≤ b ≤ c , $$\sqrt{abc}$$ ≤ 27. a=?,b=?c=? 1：a ≠ b 2：c=27
Ready4	Given positive integers $x$ and $y$ where at least $x$ is odd, which of the following must also be odd?
OG18-数学分册	In a certain learning experiment, each participant had three trials and was assigned, for each trial, a score of either –2, –1, 0, 1, or 2. The participant's final score consisted of the sum of the first trial score, 2 times the second trial score, and 3 times the third trial score. If Anne received scores of 1 and –1 for her first two trials, not necessarily in that order, which of the following could NOT be her final score?
OG19-数学分册	In a certain learning experiment, each participant had three trials and was assigned, for each trial, a score of either -2, -1, 0, 1, or 2. The participant's final score consisted of the sum of the first trial score, 2 times the second trial score, and 3 times the third trial score. If Anne received scores of 1 and -1 for her first two trials, not necessarily in that order, which of the following could NOT be her final score?
PREP07 Test 1	The sum of positive integers x and y is 77. What is the value of xy?(1) x = y + 1(2) x and y have the same tens digit.