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190321 The units digit of $$(x+1)^3$$ and $$(x+3)^3$$ are 1. What's the units digit number of $$(x-3)^3$$?
For all numbers x, the function f is defined by f(x) = 3x + 1 and the function g is defined by g(x) = $$\frac{x-1}{3}$$ . If c is a positive number, what is the value of g(c)?(1) f(c) = 13(2) f(1) = c
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The results of a survey given to students in a college class show that of the students are citizens of the U.S. only, are not citizens of the U.S., are citizens of both the U.S. and at least one other country, and 28 students did not respond. What is the total number of students surveyed?
OG12 OG15 OG16 If m > 0 and x is m percent of y, then, in terms of m, y is what percent of x ?
190302 16 < $$\frac{(n-1)!n!(n+1)!}{n!}$$ < 17. n is an positive integer. n=?
Magoosh If BC = BD, what is the length of BC?(1) x = 30(2) AD = 1GMAT、gmat题库、gmat模考、gmat考满分
OG19 OG20 OG2022 A company bought 3 printers and 1 scanner. What was the price of the scanner? (1)The total price of the printers and the scanner was $1, 300. (2)The price of each printer was 4 times the price of the scanner.
Magoosh Is |x – 6| > 2?Statement #1: |x – 4| > 3Statement #2: |x – 8| > 1
Is the integer y even?1. y - 7 is odd.2. $$\frac{y}{\frac{1}{2}}$$ is even.
PREP07 Test 2 Which of the following lists the number of points at which a circle can intersect a triangle?
190321 $$a_1=37$$,$$a_2=151$$.$$a_n=a_1+a_2+...+a_{n-1}$$,$$(n \geq 3)$$.$$a_n$$=?
OG12 Is $$x >{y}$$?(1)$$x = y + 2$$(2)$$\frac x 2 = y-1$$
190113 Is 3$$x^{2}$$ > x? 1：x ≥ 0 2：|x|<$$\frac{1}{3}$$
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A couple decides to have four children. If they succeed in having four children and each child is equally likely to be a boy or a girl, what is the probability that they will have at least two girls?
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One pocket of a backpack contains only pencils, pens, and highlighters. If a writing utensil is selected at random from this pocket, what is the probability that the chosen writing utensil is either a pen or a highlighter?

(1) The probability of choosing a highlighter is .

(2) The probability of choosing a pencil is

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If 1 1+ 1 x =2 , then x=
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Z is a positive integer. Is Z even?

(1) ZZ+1 is even

(2) (Z + 1)Z is odd
Manhattan $$\frac{49+49}{49+49^{2}}$$=
OG18-数学分册 If x = $$-\frac{5}{8}$$ and y =$$ -\frac{1}{2}$$, what is the value of the expression $$-2x -y^{2}$$
OG19-数学分册 If $$ x =-\frac{5}{8}$$and $$ y =-\frac{1}{2}$$ , what is the value of the expression $$ -2x - y^{2}$$ ?