【GRE數(shù)學(xué)】代數(shù)文字題型典型題目及答案(三)

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    考生如果覺得復(fù)習(xí)gre數(shù)學(xué)考試比較難不妨從這些題目練習(xí)開始,每篇都是按照分類給大家列舉了一些典型題目,本篇主要是針對(duì)gre數(shù)學(xué)考試算術(shù)方面的典型題目及答案。下面是21-30題。
    21. The sum of n different positive integers is less than 100. What is the greatest possible value of n?
    A.10
    B.11
    C.12
    D.13
    E.14
      答案:D
    22.If p is a prime number greater than 11, and p is the sum of the two prime numbers x and y, then x could be which of the following?
    A.2
    B.5
    C.7
    D.9
    E.13
      答案:A
    23.Of the positive integers that are multiples of 30 and are less than or equal to 360, what fraction are multiples of 12?
    A.1/6
    B.1/5
    C.1/3
    D.2/5
    E.1/2
      答案:E
    24.If x, y and z are consecutive integers and x
    (1). xyz is even.
    (2). x+y+z is even.
    (3).(x+y)(y+z) is odd.
    A. None
    B.(1) only
    C.(2) only
    D.(1)and(3)only
    E. (1),(2)and(3)
      答案:D
    25.The product of two consecutive positive integers cannot be
    A. a prime number
    B. divisible by 11
    C. a multiple of 13
    D. an even number less than 10
    E. a number having 4 as its units digit.
      答案:E
    26.When a certain number is divided by 7, the remainder is 0. If the remainder is not 0 when the number is divided by 14, then the remainder must be
    A.1
    B.2
    C.4
    D.6
    E.7
      答案:E
    27.How many of the positive integers less than 25 are 2 less than an integer multiple of 4?
    A.2
    B.3
    C.4
    D.5
    E.6
      答案:E
    28. If y is the average (arithmetic mean) of n consecutive positive integers, n>1,what is the sum of the greatest and least of these integers?
    A. 2y
    B. ny
    C. y/2
    D. y/n
    E.2n/y
      答案:A
    29.A positive integer with exactly two different divisors greater than 1 must be
    A. a prime
    B. an even integer
    C. a multiple of 3
    D. the square of a prime
    E. the square of an odd integer
      答案:D
    30.What is the least prime number greater than 83?
    A.85
    B.87
    C.88
    D.89
    E.91
      答案:D
    每到題目都是關(guān)于gre數(shù)學(xué)考試的典型題目,考生可以根據(jù)題目來復(fù)習(xí)知識(shí)點(diǎn),這樣更有針對(duì)性。