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Ready4	If a two-digit positive integer has its digits reversed, the resulting integer differs from the original by 27. By how much do the two digits differ?
Ready4	[GMAT-Math-7213-q] Which of the following inequalities is an algebraic expression for the shaded part of the number line above?
Ready4	If money is invested at r percent interest, compounded annually, the amount of the investment will double in approximately 70/r years. If Pat's parents invested $5,000 in a long-term bond that pays 8 percent interest, compounded annually, what will be the approximate total amount of the investment 18 years later, when Pat is ready for college?
Ready4	If $X$ and $Y$ are sets of integers, $X \Delta Y$ denotes the set of integers that belong to set $X$ or set $Y$ , but not both. If $X$ consists of 10 integers, $Y$ consists of 18 integers, and 6 integers are in both $X$ and $Y$ , then $X \Delta Y$ consists of how many integers?
Ready4	What is the value of $2x^2-2.4x-1.7$ for $x=0.7$ ?
Ready4	If n = 4p, where $p$ is a prime number greater than 2, how many different positive even divisors does n have, including n?
Ready4	[GMAT-Math-7222-q] When the figure above is cut along the solid lines, folded along the dashed lines, and taped along the solid lines, the result is a model of a geometric solid. This geometric solid consists of 2 pyramids, each with a square base that they share. What is the sum of the number of edges and the number of faces of this geometric solid?
Ready4	A certain right triangle has side lengths x, y, and z, where x < y < z. If the area of this triangular region is 1, which of the following indicates all of the possible values of y?
Ready4	The shaded portion of the rectangle shown above represents a section that will be cut from a piece of paper. If the area to be cut is $54$ square inches and $x=y-3$ , then $z$ equals
Ready4	If $m$ , $n$ and $p$ are constants, $m < n < p$ , and $y^{3} - y$ $= (y + m)(y + n)(y + p)$ for all numbers $y$ , what is the value of $n$ ?
Ready4	If $w, x, y,$ and $z$ are constants of which $x$ is the smallest, and $b^{4}$ $(b-w)(b-x)(b-y)(b-z)$ for all numbers $b$ , what is the value of $b$ ?
Ready4	In the figure above, if $\frac{x}{w+y} = \frac{3}{5}$ , then $w+y=$
Ready4	If $O$ is the center of the circle above, what fraction of the circular region is shaded?
Ready4	Today, Anne is three times as old as Bobbi and Bobbi is 4 years younger than Charles. If Anne, Bobbi and Charles are all alive 3 years from today, which of the following must be true on that day? I. Charles is 4 years older than Bobbi. II. Anne is three times as old as Bobbi. III. Charles is younger than Anne.
Ready4	Colleen has three dogs. One year ago, Ruff weighed twice as much as Gracie and Gracie weighed 5 pounds less than Hugo. Today, all three dogs are exactly 3 pounds heavier than one year ago. Which of the following must be true today? I. Ruff weighs twice as much as Gracie. II. Hugo weighs more than Ruff. III. Hugo weighs more than Gracie.
Ready4	One month ago, Emily had twice as much money in her bank account than Mike and Mike had $200 more than Kelly. If Emily and Mike each deposited $200 in the past month and Kelly deposited $300 in the past month, which of the following must be true today? I. Mike has more money in his account than Kelly has. II. Mike's account balance today is half of Emily's account balance today. III. Emily has more money in her account than Kelly has.
Ready4	Seventy-five percent of the fruit trees in an orchard are apple trees, and twenty percent of those trees produce yellow apples. If one tree in the orchard is to be selected at random, what is the probability that the tree selected produces yellow apples?
Ready4	The dots on the graph above indicate the Semester 1 math averages and Semester 1 science averages for 22 students at Busytown High School. How many students had a math average above 80 and a science average below 80?
Ready4	The dots on the graph above indicate sale prices (in thousands of dollars) and living area (in square feet) of the most recent 25 home sales in a certain town. How many homes that sold for more than $600,000 had living areas that were less than 3,000 square feet?
Ready4	It would take one copyist 10 minutes to copy a large document and another copyist 12 minutes to copy the same document. How many minutes would it take both copyists, working simultaneously at their respective constant rates, to copy the document?