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
22
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
Thegreenhouseeffectcausestroublebyraisingthetemperatureoftheplane
Thechangesinlanguagewillcontinueforever,butnooneknowssurewhodoe
Itwas______shewassick______shedidn’tcometoattendthefarewellparty.A
药材三棱的来源为A.黑三棱科的黑三棱B.黑三棱科的荆三棱C.莎草科的黑三棱D.禾
糖尿病最严重的慢性并发症是指A:心血管病变 B:感染 C:糖尿病肾病 D:
2021年第一季度各月稀土及其制品出口额的同比增量排序正确的是:A.2月
排列图体现了()的基本思路。 A.每次质量改进要尽可能多地选择问题 B.将主
以下不属于警察法执行原则的是( )A.执行主体多样性的原则 B.坚持法律面前
银行承兑汇票的承兑银行,应当按照票面金额向出票人收取()的手续费。A:千分之一
关于屋面涂膜防水施工的说法,正确的有( )。A.上下二层胎体增强材料应相互垂直铺
最新回复
(
0
)