数论易错题集-1_GMAT备考

数论易错题集-1

题目总数20 平均正确率 33% 预计耗时 67min 完成人数 2137

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题目详情

题号	题目内容	耗时/秒	平均正确率	操作
DS-1b2z4k	The positive integer k has exactly two positive prime factors, 3 and 7. If k has a total of 6 positi	202	38%	查看详情
PS-e63rtk	How many different sets of positive square integers, each greater than 1, add up to 75?	202	14%	查看详情
PS-cc3rzk	If [math]2^x+2^y=x^2+y^2[/math], where x and y are nonnegative integers, what is the greatest possib	202	22%	查看详情
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PS-c43s6k	If n is a positive integer greater than 1, then p(n) represents the product of all the prime numbers	202	38%	查看详情
DS-0e4c4k	Each employee on a certain task force is either a manager or a director. What percent of the employe	202	40%	查看详情
PS-8d354k	List T consists of 30 positive decimals, none of which is an integer, and the sum of the 30 decimals	202	40%	查看详情
PS-143kjk	A "Sophie Germain" prime is any positive prime number p for which 2p + 1 is also prime. The product	202	33%	查看详情
PS-733k1k	Two different primes may be said to "rhyme" around an integer if they are the same distance from the	202	33%	查看详情
PS-e34ckk	Last month 15 homes were sold in Town X. The average (arithmetic mean) sale price of the homes was $	202	39%	查看详情
DS-643rmk	If x is a positive integer, what is the value of x?[br/](1) The first nonzero digit in the decimal e	202	32%	查看详情
DS-693zak	If u is a multiple of prime number is u a multiple of [math]v^2[/math]?[br/]1. v<6[br/]2. u = 42	202	28%	查看详情
PS-ba3ksk	The operation x&n for all positive integers n greater than 1 is defined in the following manner: x&n	202	30%	查看详情
PS-373jvk	If [math]2^x+2^y=x^2+y^2[/math], where x and y are nonnegative integers, what is the greatest possib	202	38%	查看详情
PS-a93jpk	How many different sets of positive square integers, each greater than 1, add up to 75?	202	27%	查看详情
DS-253sik	If x and y are integers and x< y, what is the value of x + y?[br/](1)[math]x^Y=4[/math][br/](2) \|x\|	202	35%	查看详情
PS-104bpk	For every positive even integer n, the function h(n) is defined to be the product of all the even in	202	44%	查看详情
DS-bb44ek	If x and y are both positive integers, what is their greatest common factor?[br/](1) x and y are pri	202	14%	查看详情
PS-82355k	How many of the integers that satisfy the inequality [math](x + 2)(x + 3)/(x-2) ≥ 0[/math] are less	202	42%	查看详情
DS-f93jik	If x is a positive integer, what is the value of x?[br/](1) The first nonzero digit in the decimal e	202	43%	查看详情
PS-8c3k8k	x is replaced by 1 - x everywhere in the expression [math]1/x - 1/(1-x)[/math], with [math]x!=0[/mat	202	68%	查看详情

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数论易错题集-1

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