单选题The faces of a red die and a white die are numbered from 1 to 6. Both dice are rolled. What is the probability that the top face of each die will have the same number?A 1/3B 1/6C 1/12D 1/36E 1/72

题目
单选题
The faces of a red die and a white die are numbered from 1 to 6. Both dice are rolled. What is the probability that the top face of each die will have the same number?
A

1/3

B

1/6

C

1/12

D

1/36

E

1/72

相似考题

1.Elephants would( )if men were allowed to shoot as many as they wished.A. die downB．die outC．die awayD．die off

2.资料：In a survey,people were asked to choose between treatments to save 600 people from dying a disease. Participants,including physicians,were asked to choose between a certain outcome that 200 people will be saved and a risky choice where there is a one-third probability that 600 people will be saved and a two-thirds probability that no people will be saved. In a second example,the group were asked to choose between allowing 400 people to die or a one-third probably that nobody will die and two-thirds probability that 600 people will die. In both examples,the first choices have an identical outcome as do their second alternatives.But faced with such a grave choice people did not spot the similarities. In the first example people opted to save 200 people over the gamble of losing people and in the second example people preferred the gamble over the certain outcome of killing 400 people. What the experiment shows is that wording can have potentially dangerous consequences.Most of people tend to feel losses much more strongly than the pleasure of making a comparable gain.In the second example，more people choose the option（ ）？ A.with a one-third probability that nobody will die B.with a two-thirds probability that nobody will be saved C.allowing 400 people to die D.that 200 people will be saved

3.资料：In a survey,people were asked to choose between treatments to save 600 people from dying a disease. Participants,including physicians,were asked to choose between a certain outcome that 200 people will be saved and a risky choice where there is a one-third probability that 600 people will be saved and a two-thirds probability that no people will be saved. In a second example,the group were asked to choose between allowing 400 people to die or a one-third probably that nobody will die and two-thirds probability that 600 people will die. In both examples,the first choices have an identical outcome as do their second alternatives.But faced with such a grave choice people did not spot the similarities. In the first example people opted to save 200 people over the gamble of losing people and in the second example people preferred the gamble over the certain outcome of killing 400 people. What the experiment shows is that wording can have potentially dangerous consequences.Most of people tend to feel losses much more strongly than the pleasure of making a comparable gain.What is the difference between the two examples mentioned in the passage？A.The participants B.The wording C.The background D.The contents

4.What does the underlined phrase “die hard” in Paragraph 1 probably mean? ( )A． Change suddenly.B． Change significantly.C． Disappear mysteriously.D． Disappear very slowly.

更多“单选题The faces of a red die and a white die are numbered from 1 to 6. Both dice are rolled. What is the probability that the top face of each die will have the same number?A 1/3B 1/6C 1/12D 1/36E 1/72”相关问题

  • 第1题：

    He always adopts （） in face of difficulties.

    Aa never saying die attitude

    Ban attitude to say never die

    Can attitude of saying never die

    Dan attitude of never saying die


    D
    略

  • 第2题：

    要想设置上边框1像素红色虚线的语法结构（）。

    • A、border-top：1px solid red；
    • B、border-left：1px solid red；
    • C、border-top：1px dashed red；
    • D、border-top：1px solid blue；

    正确答案:C

  • 第3题：

    Your network consists of two subnets named Subnet1 and Subnet2. You have a server named Server1 that runs Windows Sever 2003 Service Pack 2 (SP2). Server1 is located on Subnet1.  Users from Subnet1 report poor performance when they connect to Server1. Users from Subnet2 report that they are unable to connect to Server1.You monitor both network segments and discover a large number of NetBIOS broadcasts on both network segments.You need to reduce the number of broadcasts on the network.  What should you deploy?（）

    • A、a DHCP Relay Agent 
    • B、a WINS server 
    • C、Connection Point Services (CPS) 
    • D、Simple TCP/IP Services on all computers

    正确答案:B

  • 第4题：

    单选题
    On entering from seaward，a starboard side daymark will（）.
    A

    show a fixed red light if lighted

    B

    show a Morse (A) white light

    C

    be square in shape

    D

    have an even number if numbered


    正确答案： B
    解析： 暂无解析

  • 第5题：

    单选题
    A jar contains 54 marbles each of which is blue, green, or white. The probability of selecting a blue marble at random from the jar is 1/3, and the probability of selecting a green marble at random is 4/9. How many white marbles does the jar contain?
    A

    6

    B

    8

    C

    9

    D

    12

    E

    18


    正确答案： A
    解析：
    Since the probability of selecting a blue marble at random from the jar is 1/3 and the probability of selecting a green marble at random from the jar is 4, the probability of selecting a white marble is 1-(1/3 + 4/9) = 1- (7/9) = 2/9. If x marbles of the 54 marbles in the jar are white, then x/54 = 2/9, 9x = 108, x = 108/9 = 12.

  • 第6题：

    单选题
    MCS-51单片机的外部中断1的中断请求标志是（）。
    A

    ET1

    B

    TF1

    C

    IT1

    D

    IE1


    正确答案： A
    解析： 暂无解析

  • 第7题：

    单选题
    If 1/8 of a number is 9, what is 75% of the same number?
    A

    36

    B

    48

    C

    54

    D

    72

    E

    81


    正确答案： C
    解析：
    If 1/8 of a number is 9, then 8/8 or the whole number is 8×9 or 72. Hence, 75% of the same number is 0.75×72=54.

  • 第8题：

    单选题
    Consider this syntax：   MERGE INTO t1  USING t2 ON （join predicate）…..   What does the MERGE syntax do？（）
    A

    It performs a merge join of the row from T2 only if it doesn’t exist in the T1 table. 

    B

    It creates a natural join of tables T1 and T2 for all columns that have the same name. 

    C

    It creates a Cartesian product of table T1 and table T2 for all columns that have the same name. 

    D

    For each row from T2, it updates the row if it exists within table T1, otherwise it inserts the row into T1.


    正确答案： D
    解析： 暂无解析

  • 第9题：

    单选题
    X = {-4,-2, 1,3},  Y= {-1,4,5}. If x is a number from set X, and y is a number from set Y. The probability that x + y is positive is closest to ______.
    A

    0.5

    B

    0.6

    C

    0.7

    D

    0.8

    E

    0.9


    正确答案： B
    解析：
    Split the problem into four cases, one for each possible value of x. Then add each possible value of y (-1, 4, 5). x=-4, y=-5, 0, 1; x=-2, y=-3, 2, 3; x=1, y=0, 5, 6; x=3, y=2, 7, 8. There are 12 answers to (x + y). Eight of these are greater than 0. The probability that the sums of x and y are positive (greater than zero) is 8/12=0.66, which is closest to 0. 7.

  • 第10题：

    单选题
    He always adopts （） in face of difficulties.
    A

    a never saying die attitude

    B

    an attitude to say never die

    C

    an attitude of saying never die

    D

    an attitude of never saying die


    正确答案： D
    解析： 暂无解析

  • 第11题：

    单选题
    Three fair coins are tossed at the same time. What is the probability that all three coins will come up heads or all will come up tails?
    A

    1/8

    B

    1/6

    C

    1/4

    D

    1/3

    E

    3/8


    正确答案： E
    解析：
    If three fair coins are tossed at the same time, the probability that all three will come up heads is (1/2)×(1/2)×(1/2) or 1/8. probability that all three coins will come up tails is also (1/2) × (1/2) × (1/2) or 1/8. Hence, the probability that all three coins will come up heads or all will come up tails is (1/8)+(1/8) or 1/4.

  • 第12题：

    单选题
    Three coins are tossed at the same time. What is the probability that exactly two heads are face up?
    A

    1/8

    B

    1/4

    C

    3/8

    D

    1/2

    E

    5/8


    正确答案： B
    解析：
    First, list all the possible outcomes when three coins are tossed in the air. When a coin is tossed, there are two outcomes, Heads or Tails. When three coins are tossed, there are 2×2×2= 8 possible outcomes:
    {HHH, HHT, HTH, THH, HTI', THT, TTH, TIT} Three of these outcomes have exactly two heads. Therefore, P (exactly two heads) =3/8.

  • 第13题：

    He always adopts （） in face of difficulties.

    • A、a never saying die attitude
    • B、an attitude to say never die
    • C、an attitude of saying never die
    • D、an attitude of never saying die

    正确答案:D

  • 第14题：

    Consider this syntax：   MERGE INTO t1  USING t2 ON （join predicate）…..   What does the MERGE syntax do？（）

    • A、It performs a merge join of the row from T2 only if it doesn’t exist in the T1 table. 
    • B、It creates a natural join of tables T1 and T2 for all columns that have the same name. 
    • C、It creates a Cartesian product of table T1 and table T2 for all columns that have the same name. 
    • D、For each row from T2, it updates the row if it exists within table T1, otherwise it inserts the row into T1.

    正确答案:D

  • 第15题：

    Your network consists of two subnets named Subnet1 and Subnet2. You have a server named Server1 that runs Windows Sever 2003 Service Pack 2 (SP2). Server1 is located on Subnet1. Users from Subnet1 report poor performance when they connect to Server1. Users from Subnet2 report that they are unable to connect to Server1. You monitor both network segments and discover a large number of NetBIOS broadcasts on both network segments. You need to reduce the number of broadcasts on the network.  What should you deploy?（） 

    • A、a DHCP Relay Agent.
    • B、a WINS server.
    • C、Connection Point Services （CPS）.
    • D、Simple TCP/IP Services on all computers.

    正确答案:B

  • 第16题：

    单选题
    Your network consists of two subnets named Subnet1 and Subnet2. You have a server named Server1 that runs Windows Sever 2003 Service Pack 2 （SP2）. Server1 is located on Subnet1. Users from Subnet1 report poor performance when they connect to Server1. Users from Subnet2 report that they are unable to connect to Server1. You monitor both network segments and discover a large number of NetBIOS broadcasts on both network segments.You need to reduce the number of broadcasts on the network. What should you deploy？（）
    A

    a DHCP Relay Agent

    B

    a WINS server

    C

    Connection Point Services（CPS）

    D

    Simple TCP/IP Services on all computers


    正确答案： C
    解析： 暂无解析

  • 第17题：

    单选题
    A jar contains 4 red, 1 green, and 3 yellow marbles. If 2 marbles are drawn from the jar without replacement, what is the probability that both will be yellow?
    A

    3/8

    B

    3/28

    C

    1/4

    D

    3/56

    E

    5/56


    正确答案： B
    解析：
    There are eight marbles in the jar. The probability of choosing the first yellow marble is 3/8. The probability that your second marble will also be yellow is 2/7. The probability that both will be yellow is 3/8×2/7=6/56=3/28.

  • 第18题：

    单选题
    A student is instructed to arrange four cards in a row on a table. She has six cards to choose from, each of which has a different color: black, red, blue, green, yellow, and brown. If the student follows these instructions but otherwise chooses her cards randomly, what is the probability that her arrangement will be blue, red, yellow, and green, in that order?
    A

    1/90

    B

    1/ 180

    C

    1/360

    D

    1/540

    E

    1/720


    正确答案： B
    解析：
    从6张不同颜色的卡片中选出其中四张排列为1列，第一张卡片有6中选择，第二张卡片有5中选择，以此类推，第三张和第三张卡片分别有4种和3种选择，所以将4张卡片排在一起的可能性为6 x 5 x 4 x 3 = 360种。所以概率为1/360。

  • 第19题：

    单选题
    Which of the following statements is closest in meaning to what was said?
    A

    The number of Americans who die from AIDS each year has dropped dramatically.

    B

    40, 000 Americans are diagnosed as HIV carriers each year.

    C

    Nearly a third of the 850,000 to 950,000 U.S residents living with HIV/AIDS are aware they carry the virus.

    D

    From 1981 to 2001, nearly one-third of all HIV infections are drug users and their sex partners.


    正确答案： A
    解析：
    从录音最后提到的“From 1981…to 2001, intravenous drug users and their sex partners have accounted for nearly one-third of all HIV infections”，可知从1981年到2001年，三分之一的HIV感染者都是吸毒者和他们的性伙伴，account for指“（在数量、比例上）占”。
    【录音原文】
    About 16,000 Americans die each year from AIDS and another 40,000 contract HIV; nearly a third of the 850,000 to 950,000 U.S residents living with HIV/ AIDS are unaware they carry the virus. From 1981—when the disease was first documented—to 2001, intravenous drug users and their sex partners have accounted for nearly one-third of all HIV infections.

  • 第20题：

    单选题
    A die whose faces are numbered from l to 6 is rolled. Which of the following statements must be true?Ⅰ. The probability of getting a 4 on the top face is 2/3.Ⅱ. The probability of getting an odd number on the top face is 1/2.Ⅲ. The probability of getting a prime number on the top face is 1/2.
    A

    Ⅰand Ⅱ only

    B

    Ⅱ and Ⅲ only

    C

    Ⅰ and Ⅲ only

    D

    Ⅱ only

    E

    Ⅰ, Ⅱ, and IⅢ


    正确答案： E
    解析：
    There are total six different results when the die is rolled. Since any one of the six numbers many show up on the top face, the probability of getting a 4 on the top face is 1/6. Hence, Roman numeral Ⅰ is not true. Statement Ⅱ is true. Since there are three prime numbers, the probability is 3/6 or 1/2. Hence, Roman numeral Ⅲ is true.

  • 第21题：

    单选题
    It can be inferred from the passage that ______.
    A

    malaria and yellow fever have been reported this year

    B

    no new cases of smallpox have been reported this year

    C

    smallpox victims no longer die when they contract the disease

    D

    smallpox is not transmitted from one person to another


    正确答案： D
    解析：
    推断题。第四段首句提到“到1978年4月世界卫生组织已隔离了所知的最后一个病例”。该段最后两句指出“如今，天花已不再对人类构成威胁。全球范围内也已停止了对天花疫苗的常规注射”。由此可以选项B推断正确。

  • 第22题：

    单选题
    Your network consists of two subnets named Subnet1 and Subnet2. You have a server named Server1 that runs Windows Sever 2003 Service Pack 2 (SP2). Server1 is located on Subnet1.  Users from Subnet1 report poor performance when they connect to Server1. Users from Subnet2 report that they are unable to connect to Server1.You monitor both network segments and discover a large number of NetBIOS broadcasts on both network segments.You need to reduce the number of broadcasts on the network.  What should you deploy?（）
    A

    a DHCP Relay Agent 

    B

    a WINS server 

    C

    Connection Point Services (CPS) 

    D

    Simple TCP/IP Services on all computers


    正确答案： A
    解析： 暂无解析

  • 第23题：

    单选题
    Each of seven identical cards is numbered on one of its sides with a different integer from 1 to 7. The cards are turned over and then shuffled so that they are not in a predictable order. If two cards are selected at random without replacement, what is the probability that their sum is at least l1?
    A

    4/9

    B

    4/21

    C

    49/81

    D

    7/10

    E

    4/7


    正确答案： A
    解析：
    The number of all possible sums is 7×6=42. Since 8, {(7, 6), (7, 5), (7, 4), (6, 7), (6, 5), (5, 7), (5, 6), (4, 7)}, of the 42 possible sums are 11 or more, the probability of picking tow cards whose sum will be at least 11 is 8/42=4/21.

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