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What is the value of y?(1)4y-3 = y + 1(2)$${1}-\frac{2}{y}={4}$$
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If n and k are positive integers, is n divisible by 6?(1)n = k(k + 1)(k - 1)(2)k - 1 is a multiple of 3.
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Manhattan
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$${1}\over{{3}+\frac{4}{7}}$$=
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模考带练机经题
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(4.6*$$10^{m}$$)*(2.3*$$10^{k}$$)=1.058*$$10^{t}$$
Express t in terms of m and k
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OG18-数学分册
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If x + y + z > 0, is z >1?(1) z > x + y + 1(2) x + y +1 < 0
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300难题
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If x + y + z > 0, is z > 1 ?
1.z > x + y + 1
2.x + y + 1 < 0
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181215
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Is |x|=y-1？
条件1：x+y=1
条件2：x < 0
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Is x between 0 and 1 ?(1) x is between $$-\frac{1}{2}$$ and$$\frac{3}{2}$$(2) $$\frac{3}{4}$$ is $$\frac{1}{4}$$ more than x
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PREP07 Test 1
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Is x between 0 and 1 ?(1) x is between $$-\frac{1}{2}$$ and $$\frac{3}{2}$$(2)$$\frac{3}{4}$$ is $$\frac{1}{4}$$ more than x.
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190310
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Which of the following options satisfy $$x^{-9}-x^{-8} >0$$?
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PREP07 Test 2
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Tanya prepared 4 different letters to be sent to 4 different addresses. For each letter, she prepared an envelope with its correct address. If the 4 letters are to be put into the 4 envelopes at random, what is the probability that only 1 letter will be put into the envelope with its correct address?
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If m denotes a number to the left of 0 on the number line such that $$m^{4}$$ is less than$$\frac{1}{81}$$ , then the the reciprocal of $$m^{2}$$ must be
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Magoosh
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Is y > x?Statement #1: y = x + 1Statement #2: y = $$x^2$$ + 1
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OG12 OG15
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Is $${5}^{k}$$ less than 1,000 ?(1)$${5}^{k+1} >3,000$$(2)$${5}^{k-1}={5}^{k}-500$$
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A certain list consists of 21 different numbers. If n is in the list and n is 4 times the average (arithmetic mean) of the other 20 numbers in the list, then n is what fraction of the sum of the 21 numbers in the list?
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PREP07 Test 1
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In a certain board game, a stack of 48 cards, 8 of which represent shares of stock, are shuffled and then placed face down. If the first 2 cards selected do not represent shares of stock, what is the probability that the third card selected will represent a share of stock?
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Magoosh
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A class consists of 24 students. Which of the following CANNOT be the ratio of the number of girls to the number of boys?
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OG19-数学分册
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A certain company that sells only cars and trucks reported that revenues from car sales in 1997 were down 11 percent from 1996 and revenues from truck sales in 1997 were up 7 percent from 1996. If total revenues from car sales and truck sales in 1997 were up 1 percent from 1996, what is the ratio of revenue from car sales in 1996 to revenue from truck sales in 1996 ?
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190603
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It is given that f(x)=1-x, What is value of “ -f{ f(-(1-x))}”
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190310
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$$A_1B_1C_1D_1$$,$$A_2B_2C_2D_2$$,$$A_3B_3C_3D_3$$are square.$$A_1B_1C_1D_1$$,$$A_2B_2C_2D_2$$are midpoints. What is the ratio of the area of the shaded part to the area of the unshaded part?
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