网友您好， 请在下方输入框内输入要搜索的题目：
题目内容
（请给出正确答案）
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
参考答案
参考解析
解析：
If the top face of the red die is a number from 1 to 6, then the probability that the top face of the white die will have the same number is 1/6. So the probability that the top face of each die will have the same number is 1×(1/6) or 1/6.
If the top face of the red die is a number from 1 to 6, then the probability that the top face of the white die will have the same number is 1/6. So the probability that the top face of each die will have the same number is 1×(1/6) or 1/6.
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” 相关考题
考题
Elephants would( )if men were allowed to shoot as many as they wished.A. die downB．die outC．die awayD．die off
考题
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.
考题
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
考题
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
考题
He always adopts （） in face of difficulties.Aa never saying die attitudeBan attitude to say never dieCan attitude of saying never dieDan attitude of never saying die
考题
He always adopts （） in face of difficulties.A、a never saying die attitudeB、an attitude to say never dieC、an attitude of saying never dieD、an attitude of never saying die
考题
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；
考题
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.
考题
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
考题
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.
考题
单选题On entering from seaward，a starboard side daymark will（）.A
show a fixed red light if lightedB
show a Morse (A) white lightC
be square in shapeD
have an even number if numbered
考题
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 AgentB
a WINS serverC
Connection Point Services（CPS）D
Simple TCP/IP Services on all computers
考题
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
6B
8C
9D
12E
18
考题
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
3/8B
3/28C
1/4D
3/56E
5/56
考题
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
1/90B
1/ 180C
1/360D
1/540E
1/720
考题
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.
考题
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.
考题
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 onlyB
Ⅱ and Ⅲ onlyC
Ⅰ and Ⅲ onlyD
Ⅱ onlyE
Ⅰ, Ⅱ, and IⅢ
考题
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
0.5B
0.6C
0.7D
0.8E
0.9
考题
单选题It can be inferred from the passage that ______.A
malaria and yellow fever have been reported this yearB
no new cases of smallpox have been reported this yearC
smallpox victims no longer die when they contract the diseaseD
smallpox is not transmitted from one person to another
考题
单选题He always adopts （） in face of difficulties.A
a never saying die attitudeB
an attitude to say never dieC
an attitude of saying never dieD
an attitude of never saying die
考题
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
考题
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
1/8B
1/6C
1/4D
1/3E
3/8
考题
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
4/9B
4/21C
49/81D
7/10E
4/7
考题
单选题Three coins are tossed at the same time. What is the probability that exactly two heads are face up?A
1/8B
1/4C
3/8D
1/2E
5/8
热门标签
最新试卷
