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
2024-01-12
71
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/3355383.html
相关试题推荐
Gall’shypothesisoftherebeingdifferentmentalfunctionslocalizedindiffere
Somebatcaves,likehoneybeehives,haveresidentsthattakeondifferentdutie
Althoughmanyartpatronscanreadilydifferentiateagooddebenturefromanund
Althoughmanyartpatronscanreadilydifferentiateagooddebenturefromanund
TheproductoftwoconsecutivepositiveintegersCANNOTbeA、aprimenumberB、div
Theaverage(arithmeticmean)of3differentpositiveintegersisequaltothe
[img]ct_gre5image040[/img]Thefigureaboveshowsalargesquareformedbyfitti
Theintegersbetween1and100,inclusive,areputinlistAiftheyaredivisib
Ifn=pqr,wherep,q,andrarethreedifferentpositiveprimenumbers,howma
Oneintegerwillberandomlyselectedfromtheintegers11to60,inclusive.Wha
随机试题
Acertificateofdeposit(CD)isissuedbyadepositoryinstitution【56】thatth
In1915EinsteinmadeatriptoGottingentogivesomelecturesattheinvit
Everyonewantstobehealthyandhappy.【C1】______,illnessoraccidentsmay
"MadeinChina"lostitsnoveltylongago.Thelabelhasbecome【C1】______in
()是零基预算的优点。A.剔除无效活动 B.可在时间紧迫条件下快速编制 C.
若二次根式 有意义,则x可取的数为()。A.比1小的数 B.不小于-1的
A解答:正确答案应为A。左边图形中1个小星形相当于2个小圆形,通过换算,左边每格中均为14个小圆形。
在我国历史上,以“中学为体,西体为用”为指导思想,以读经尊孔为教育宗旨,第一次以
属于修建性详细规划编制基本原则的是()。A.坚持多元化的编制主体的原则
(2020年真题)解决国际重复征税的方法有()。A.抵消法 B.低税法
最新回复
(
0
)