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来源	题目内容
OG16 OG17 OG18 OG19 OG20 OG2022	The graph of the equation xy = k, where k < 0, lies in which two of the quadrants shown above?
Ready4	How many different prime numbers are factors of the positive integer $<font color='#FE8080'>k</font>$ ? (1) Three different prime numbers are factors of $5k$ . (2) Three different prime numbers are factors of $<font color='#FE8080'>k</font>^2$ .
OG12	If k, m, and t are positive integers and $$\frac k 6+\frac m 4=\frac t {12}$$, do t and 12 have a common factor greater than 1 ?(1)k is a multiple of 3.(2)m is a multiple of 3.
Magoosh	Line k is in the rectangular coordinate system. If line k is defined by the equation 3y = 2x + 6, and line k intersects the x-axis at point (a,b), then what is the value of a?
OG12 OG15	If 4 is one solution of the equation $${x}^{2} + 3x + k = 10$$, where k is a constant, what is the other solution?
Ready4	The sequence $t_1, t_2, t_3,...,t_n,...$ such that $t_n = \frac{1}{n - 1} - \frac{1}{n}$ for all integers $n > 1$ . If $<font color='#FE8080'>k</font>$ is a positive integer greater than $1$ , is the sum of the first $<font color='#FE8080'>k</font>$ terms of the sequence less than $\frac{11}{12}$ ? (1) $<font color='#FE8080'>k</font> < 13$ (2) $<font color='#FE8080'>k</font> > 9$
	In the xy-plane, line l and line k intersect at the point $$(\frac{16} 5,\frac{12} 5)$$. What is the slope of line l?(1)The product of the slopes of line l and line k is -1.(2)Line k passes through the origin.
	If I and k are lines in the xy-plane, is the product of the slopes of I and k equal to -1 ?(1)Line I passes through the origin and the point (1, 2).(2)Line k has x-intercept 4 and y-intercept 2.
Magoosh	In the xy-coordinate system, do any points on line k lie in quadrant III?(1) Line k has y-intercept 2(2) Line k has slope $$\frac {2}{3} $$
Manhattan	If x is an integer, then x(x – 1)(x – k) must be evenly divisible by three when k is any of the following values EXCEPT
	$$({2}^{m}+{5}^{m}){K}$$问有几位数？1 m=72 k<20
PREP07 Test 2	What is the value of $$v^3 - k^3$$ ?(1) vk > 0(2) v - k = 6
	If k is a two-digit positive integer with tens digit x and units digit y, then $${k}^{2}$$ =
Magoosh	In the diagram above, ABCD is a square with side M, and EFGH is a square with side K. What is the value of (M + K)?Statement #1: (M – K) = 9Statement #2: the area of triangle AEH is 36
PREP07 Test 1	What was the percent increase in the population of City K from 1980 to 1990 ? (1) In 1970 the population of City K was 160,000 (2) In 1980 the population of City K was 20 percent greater than it was in 1970, and in 1990 the population of City K was 30 percent greater than it was in 1970.
PREP07 Test 1	for any integer k from 1 to 10, inclusion, the kth of a certain sequence is given by $$(-1)^{k+1}(\frac1 {2^k})$$. If T is the sum of the first 10 terms of the sequence, then T is:
191031	It is given that： 2 / k + 4 / m = r / s, where r / s is the fraction in lowest term, Is s = km? 1. k and m are prime numbers 2. k and m have no common factors except 1.
OG18-数学分册	At the opening of a trading day at a certain stock exchange, the price per share of stock K was $8. If the price per share of stock K was $9 at the closing of the day, what was the percent increase in the price per share of stock K for that day?
OG12 OG15	If n + k = m, what is the value of k ?(1)n = 10(2)m + 10 = n
OG12	If the average (arithmetic mean) of the four numbers K, 2K + 3, 3K - 5, and 5K + 1 is 63, what is the value of K?