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来源	题目内容
190215	Which of the following meets the equation $$t^{4}$$-38$$t^{3}$$+72$$t^{2}$$=0?
200301	What is the maximum prime factor of $$2^{32} +4^{16} +8^8$$?
190124	Which line in the coordinate system only passes through only one point whose x and y coordinates are all integers?
OG12 OG15 OG16 OG17	On Monday, a person mailed 8 packages weighing an average (arithmetic mean) of $$12\frac{3}{8}$$ pounds, and on Tuesday, 4 packages weighing an average of $$15\frac{1}{4}$$ pounds. What was the average weight, in pounds, of all the packages the person mailed on both days
OG18 OG19 OG20 OG2022	If a sphere with radius r is inscribed in a cube with edges of length e, which of the following expresses the relationship between r and e ?
	If a + b = 24 and a = 3b, then $$\sqrt{a}+\frac{a}{b}=$$
	For which of the following functions f(x) is the relation f(f(x)) = f(f(f(f(x)))) NOT true for at least some values of x not equal to zero?
Ready4	A certain right triangle has side lengths $x$ , $y$ , and $z$ , where $x=y$ . If the area of this triangular region is $<font color='#FE8080'>4</font>$ , which of the following is the value of $y$ ?
Ready4	The perimeter of an isosceles right triangle is $6+6\sqrt{2}$ . What is the length of the hypotenuse?
Magoosh	Region R is a square in the x-y plane with vertices J = (–1, –2), K = (–1, 4), L = (5, 4), and M = (5, –2). What is the probability that a randomly selected point in region R lies below the line 3x – 5y = 10?
Ready4	If $<font color='#FE8080'>4</font>^{12}\cdot 3^{23}=2\cdot 6^z$ , what is the value of $z$ ?
PREP07 Test 2	At a certain store, each notepad costs x dollars and each marker costs y dollars. If $10 is enough to buy 5 notepads and 3 markers, is $10 enough to buy 4 notepads and 4 markers instead? (1) Each notepad costs less than $1. (2) $10 is enough to buy 11 notepads.
Magoosh	A drawer contains 36 socks, and 2 socks are selected at random without replacement. What is the probability that both socks are black?(1) The probability is 4/9 that the first sock is black.(2) The number of white socks in the drawer is 4 more than the number of black socks.
Magoosh	In the diagram above, the triangle is equilateral with a side of 2. All three circles are of equal size and all are tangent to each other and to two sides of the triangle. Which of the following is the radius of one of the circles?
Ready4	In what proportion should a 2% alcohol solution and a 40% alcohol solution be mixed in order to produce a 15% solution?
190113	According to the picture, AB is perpendicular to BD. AB=6, BC=8, CD=4/3. What`s the relationship between $$b_1$$ and $$b_2$$?
190302	The denominations are different while the thickness is the same. The total value of $10000 of $20 banknotes is 35feet10inches. What is the height of the total value of $6000000000 of $50 banknotes? (1feet=12inches)
191020	If $$x^3=-3$$, which of the following is the value of x2?
Magoosh	If $$\frac{x}{3} + \frac{x}{4} + 15 = x$$, then x =
	If x= 4, what is the value of $$-{5}({x}^{2})$$?