更多“Which of the following integers is divisible by 4 and 6, but”相关问题
  • 第1题:

    Which of the following is the MINIMUM number of disks necessary for a RAID 10 array?()

    • A、2
    • B、3
    • C、4
    • D、6

    正确答案:C

  • 第2题:

    Which of the following is the minimum number of drives in an RAID 10 configuration?()

    • A、2
    • B、3
    • C、4
    • D、6

    正确答案:C

  • 第3题:

    单选题
    If a and b are integers and the sum of ab and b is even, which of the following could be true?Ⅰ. a and b are both odd.Ⅱ. a is even and b is odd.Ⅲ. a is odd and b is even.
    A

    Ⅰ only

    B

    Ⅱonly

    C

    Ⅲ only

    D

    Ⅰ and Ⅱ

    E

    Ⅰand Ⅲ


    正确答案: C
    解析:
    Plug-in. StatementⅠ:if a and b are both odd, says a=1 and b=3, then ab+b=6. Since the sum is even, statementⅠ is true. StatementⅡ:1et a=2 and b=3, then ab+b=9. Since the sum is odd, this statement is false. Statement Ⅲ:let a=3 and b=2, then ab+b=8, which is even. So both statement Ⅰand statementⅢ are true.

  • 第4题:

    单选题
    What is the average (arithmetic mean) of 8 consecutive odd integers if the smallest of those integers is n?
    A

    n+5

    B

    n+6

    C

    n+7

    D

    n+8

    E

    n+9


    正确答案: E
    解析:
    最小的整数为n。它们是连续的奇数。这组整数为:n,n+ 2, n+4, n+6, n+8, n+10, n+12, n+14。计算这些整数的平均数即为将它们想加除于8。得出(8n+56)/8=n+7

  • 第5题:

    多选题
    If x and y are both positive even integers, which of the following expressions must be even? (Select all such expressions.)
    A

    xy

    B

    (x+1)y

    C

    x(y+1)


    正确答案: B,A
    解析:
    由于题目中x和y是变量,可以根据题干给出的条件给x, y设定符合条件的数值,代入各选项,看结果是否符合题干要求,即可得出答案。

  • 第6题:

    单选题
    If the sum of 4 consecutive positive integers is w, in terms of w, which of the following represents the sum of the next 4 consecutive positive integers?
    A

    w2+16

    B

    w+16

    C

    4w+16

    D

    4w+4

    E

    w+4


    正确答案: D
    解析:
    Let x, x+1, x+2, x+3, represent the 4 consecutive integers. Then, x+x+1+x+2+x+3=w or 4x+6=w. The next 4 consecutive positive integers will be:x+4, x+5, x+6, x+7. Their sum will be:4x+22=4x+6+16=w+16.

  • 第7题:

    单选题
    Let Ω p be defined as p2/3-p for all positive integers, p. If Ωn = s, and s is a positive integer, which of the following is a possible value for s?
    A

    1

    B

    3

    C

    5

    D

    6

    E

    8


    正确答案: D
    解析:
    根据题干Ωn =n2 /3-n=s. n为正整数,且s为正整数;根据函数可知只有当n是3的倍数时,s才能为整数,否则如果n2 /3不是整数,s也不是整数。现在可以从符合条件的n的最小值3代入到函数中。当n=3时,n2 /3-n =32 /3-3 = 3-3 = 0 = s;当n=6时,n2 /3-n = 62 /3-6 = 12-6 = 6 = s。所以故选D。

  • 第8题:

    单选题
    Which of the following integers is divisible by 4 and 6, but is not divisible by 8?
    A

    12

    B

    24

    C

    48

    D

    64

    E

    72


    正确答案: B
    解析:
    第一个数字能被4和12整除,但不能被8整除。因此正确选项为A。24,48,64,72,都能被4,6,8,整除。

  • 第9题:

    单选题
    On which of the following cables would a technician find a BNC connector installed?()
    A

    CAT6

    B

    RG-6

    C

    Fiber

    D

    CAT3


    正确答案: D
    解析: 暂无解析

  • 第10题:

    单选题
    A client host uses IPv4 to communicate with one ser ver and IPv6 to communicate with another.Which of the following IPv6 coexistence features is likely at work on the host?()
    A

    Native IPv6

    B

    Point - to -point tunnels

    C

    Multipoint tunnels

    D

    NAT - PT

    E

    Dual stacks


    正确答案: E
    解析: 暂无解析

  • 第11题:

    单选题
    Which of the following firing order may be used for an 6 cylinder engine?()
    A

    1-2-3-4-5-6

    B

    1-2-3-6-5-4

    C

    1-5-3-6-2-4

    D

    1-3-4-5-6-2


    正确答案: B
    解析: 暂无解析

  • 第12题:

    单选题
    Which of the following is the MINIMUM number of disks necessary for a RAID 10 array?()
    A

    2

    B

    3

    C

    4

    D

    6


    正确答案: D
    解析: 暂无解析

  • 第13题:

    Which of the following uses TCP?()

    • A、DHCP
    • B、SNMP
    • C、TFTP
    • D、IMAP4

    正确答案:D

  • 第14题:

    At which of the following layers does the UDP protocol operate?()

    • A、Layer 1
    • B、Layer 4
    • C、Layer 6
    • D、Layer 7

    正确答案:B

  • 第15题:

    单选题
    x, y, and z are positive integers. Which of the following lists all the possible ways for x + y + z to be an odd number?I. One of the numbers is odd.II. Two of the numbers are odd.III. Three of the numbers are odd.
    A

    I

    B

    I and II

    C

    I and III

    D

    II and III


    正确答案: C
    解析:
    I. One of the numbers is odd. Let x be odd. Let y and z be even. y + z is even. An even plus an odd is odd, so x + y + z is odd.

  • 第16题:

    单选题
    If n/6, n/8 and n/9 are all integers, then n must be divisible by ______.
    A

    54

    B

    64

    C

    65

    D

    68

    E

    72


    正确答案: E
    解析:
    因为n/6, n/8和n/9都是整数,那么n一定是6,8,9的倍数。这三个数的最小公倍数为72。n 可以是比72大的整数,但是n一定是72的倍数,如144,216。

  • 第17题:

    单选题
    If m and n are positive integers and 3m+n-1=2m+2n, which of the following must be true?I. m and n are consecutive integers.II. m is even.III. n is odd.
    A

    None

    B

    I only

    C

    II only

    D

    III only

    E

    I, II, and III


    正确答案: D
    解析:
    Since m=n+1, where m and n are given as positive integers, Roman numeral choice I is true. Since, m=n+1, m can be either odd or even, hence choice II is false. Roman numeral choice III is also false since n can be either even or odd.

  • 第18题:

    单选题
    If x is an integer and y=4x+3, which of the following cannot be a divisor of y?
    A

    5

    B

    6

    C

    7

    D

    9

    E

    23


    正确答案: A
    解析:
    将几个选项代入反解x可知,y的值不可能为6,故本题选B项。

  • 第19题:

    单选题
    How many positive integers less than 70 are equal to the product of a positive multiple of 5 and an even number?
    A

    4

    B

    6

    C

    9

    D

    10

    E

    11


    正确答案: D
    解析:
    All even multiples of 5 must be multiples of 10. So the multiples of 10 between 0 and 70 are 10, 20, 30, 40, 50 and 60. That’s 6 altogether.

  • 第20题:

    单选题
    When a positive integer p is divided by 7, the remainder is 2. Which of the following expressions will yield a remainder of 4 when divided by 7?
    A

    p+2

    B

    p+3

    C

    p+4

    D

    p+5

    E

    p+6.


    正确答案: E
    解析:
    根据题干给出的条件,可知p为9满足。将p代入A中选项,p+2=11,被7除时余4,所以A符合。

  • 第21题:

    多选题
    Which of the following protocols utilize UDP as the layer 4 transport mechanism?()
    A

    TACACS

    B

    Telnet

    C

    SMTP

    D

    SNMP

    E

    HTTP

    F

    TFTP


    正确答案: D,E
    解析: 暂无解析

  • 第22题:

    单选题
    Which of the following can be an STP cable?()
    A

    RG-6

    B

    CAT5e

    C

    Fiber

    D

    RG-59


    正确答案: A
    解析: 暂无解析

  • 第23题:

    多选题
    Which of the following could be the number of cores contained within AMD processors that utilize AM3 socket?()
    A

    4

    B

    5

    C

    6

    D

    7

    E

    12


    正确答案: E,C
    解析: 暂无解析

  • 第24题:

    多选题
    Which of the following IPv6 tunneling mechanisms support IPv6 IGP routing protocols?()
    A

    Automatic 6to4

    B

    Manually configured tunnel

    C

    ISATAP

    D

    GRE


    正确答案: D,B
    解析: 暂无解析