首页
登录
职称英语
How many different five-digit positive integers can be formed using the digits 1
How many different five-digit positive integers can be formed using the digits 1
游客
2025-02-23
7
管理
问题
How many different five-digit positive integers can be formed using the digits 1, 2, 3,4, 5,6, and 7 if none of the digits can occur more than once in the integer?
选项
答案
2,520
解析
This example asks how many ways there are to order 5 integers chosen from a set of 7 integers. According to the counting principle above, there are(7)(6)(5)(4)(3)= 2,520 ways to do this. Note that this is equal to
转载请注明原文地址:https://tihaiku.com/zcyy/3969945.html
相关试题推荐
Howmany3-digitpositiveintegersareoddanddonotcontainthedigit5?288
Agroupof20valueshasameanof85andamedianof80.Adifferentgroupof3
Whichoftheintegers312,98,112,and144aredivisibleby8?312,112,and14
Whenthedecimalpointofacertainpositivedecimalnumberismovedsixplaces
Paulistolistconsecutivepositiveintegersstartingfrom1.Ifdigit“3”appe
Ifthetensdigitxandtheunitsdigityofapositiveintegernarereversed,
Ifonenumberischosenatrandomfromthefirst1,000positiveintegers,whati
Howmanyintegersarethereintheset-4<x2+5x<14?4-4<x2+5x<14化简成为不等式组x2+5x-1
xisapositiveinteger.Whenxisdividedby2,4,6or8,theremainderis1.
If2,4,6,7,8,and9arethedigitsoftwo3-digitintegers,whatistheleas
随机试题
Shewasso______inherworkthatshedidn’tnoticemewhenIcameintheroom.(2
Thedictionaryisoftenusedtodeterminethecorrectspellingofwords,or
Thewomanandthemanareclassmates.[br][originaltext]M:Hi,Kelly.Wherehav
某跨径为25m的预应力混凝土简支箱梁桥动力(自振)特性测定试验,试完成以下相关试
下列关于个人贷款审批意见的表述,正确的是( )。A.采用单人审批时,贷款审批人
传染病法规定:甲类传染病要求发病后于A.2小时内上报 B.4小时内上报 C.
尿路感染最常见的致病菌是A.产气杆菌 B.铜绿假单胞菌 C.大肠埃希菌 D
下列选项中不属于股东权利的是()。A:临时股东(大)会召开的提议权和提案权 B
肾虚腰痛,无明显阴阳偏盛者可服用 A.河车大造丸 B.补髓丹 C.六味地黄
班杜拉的社会学习理论属于()。A.发生认识论的代表性理论 B.认知心理学的代表
最新回复
(
0
)