首页
登录
职称英语
If a three-digit number is selected at random from the integers 100 to 999, incl
If a three-digit number is selected at random from the integers 100 to 999, incl
游客
2024-01-14
32
管理
问题
If a three-digit number is selected at random from the integers 100 to 999, inclusive, what is the probability that the first digit and the last digit of the integer will both be exactly two less than the middle digit?
选项
A、1:900
B、7:900
C、9:1,000
D、1:100
E、7:100
答案
B
解析
There are exactly 7 digits out of the 900 for which this statement is true: 131, 242, 353, 464, 575, 686, 797; that equals a probability of 7 out of 900.
转载请注明原文地址:https://tihaiku.com/zcyy/3360437.html
相关试题推荐
Thegovernmentplaced()onthenumbersofforeigncarsthatcouldbeimported.A、
Therewerea______numberofstudentsontheplayground.A、fewB、littleC、shortD、
Normallyastudentmustattendanumberofcoursesinordertograduate,and
Normallyastudentmustattendanumberofcoursesinordertograduate,and
Normallyastudentmustattendanumberofcoursesinordertograduate,and
______thenumberofcars,hethought,therewerenotmanypeopleattheclubyet
InShanghai,agrowingnumberofforeign-fundedbanksarelookingforlocalp
InShanghai,agrowingnumberofforeign-fundedbanksarelookingforlocalp
InShanghai,agrowingnumberofforeign-fundedbanksarelookingforlocalp
Mancannotgoonincreasinghisnumberatthepresentrate.Inthenext30ye
随机试题
[originaltext]M:Ha,ourplaneistakingoff!W:Why!Myearsfeelfunny.What’
AsanimmigranttoNorthAmerican,youwillneedtoensurethatemployersand
HowtoBeanExpertI.Backgroundinformationaboutthe
Learninganotherlanguagegivesthelearnertheabilitytostepinsidethem
Widespreadadoptionofplug-inelectricvehiclescoulddramaticallycutgree
计算工业中间投入的具体方法有正算法和倒算法两种。( )
湖南崑山为典型的丹霞地貌景观。
投资为主是指农村集体经济组织或者农民投资超过______,或者虽未超过_____
根据借贷市场上借贷双方通过竞争而形成的利息率是()。A:官定利率 B:浮动利率
下列事项只能制定法律的有( )。A.基本民事制度 B.历史文化保护 C.环
最新回复
(
0
)