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Manhattan题集

Manhattan是美国一个类似XDF的教育辅导机构，网上常常直接用于指代它所出版的一系列GMAT复习资料。其备考资料在GMAT备考计划中使用广泛，考生多用来进行强化练习或巩固提升。Manhattan的书籍内容多是以理论与实践相结合的形式进行编写，前半部分主要对各个单项进行理论知识的介绍，后半部分则着重强化练习，并带有详细的题目解析，旨在帮助考生更好的理解文章含义，提升GMAT阅读的做题水平。

121 If a and b are positive integers and$x = 4^{ a} and y = 9^{ b}$, which of the following is a possible units digit of xy?
122 When a is divided by b, the quotient is c and the remainder is d. Which of the following expressions is equal to d?
123 If$9^{2x + 1} = 27^{2}$, then x =
124 Jack pours water into a bucket until the bucket is filled to 60% of its capacity. Jill then fills the bucket to capacity by pouring an additional $\frac{2}{3}$ of a gallon of water into the bucket. What is the capacity of the bucket, in gallons?
125 The perimeter of a rectangular yard is completely surrounded by a fence that measures 40 meters. What is the length of the yard if the area of the yard is 64 meters squared? 126 A recycling facility is staffed by eight floor workers and one manager. All of the floor workers are paid equal wages, but the manager is paid q times as much as a floor worker. If the manager’s wages account for$\frac {1}{7}$of all wages paid at the facility, what is the value of q?
127 If $3^{2n} = (\frac{1}{9})^{n+2}$, what is the value of n?
128 $\frac{49+49}{49+49^{2}}$=
129 Set A contains three different positive odd integers and two different positive even integers; set B contains two different positive odd integers and three different positive even integers. If one integer from set A and one integer from set B are chosen at random, what is the probability that the product of the chosen integers is even?
130 Each of the following numbers has a remainder of 2 when divided by 11 except:
131 If a and b represent positive single digits in the correctly worked computation above, what is the value of a + 2b?

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