How many different five-digit positive integers can be formed using the digits 1

游客2024-01-12 30

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

Earthquakeisashakingofthegroundcausedbythesuddenbreakingandthe
Recently,apossiblealternativewayofproducingpaperhasbeensuggestedb
【S1】[br]【S10】BBut和Still提示最后两句与前面所述形成转折，表示对用钱刺激上学这一作法的不赞同，所以此处应填有negative色彩的词，因
Fromahillside,KamalSaadatlookedforlornlyathundredsofpotentialcust
A
男性，50岁，体重80kg，身高165cm，平素体健，近被疑似糖尿病。此患者首选
根据《药品说明书和标签管理规定》，下列叙述错误的是A.药品标签由国务院药品监督管
抗日战争时期，民族矛盾上升为国内的主要矛盾，我们党建立了抗日民族统一战线；人民解
机械通气的目的包括（　　）。A.维持合适的通气量 B.改善肺的氧合功能 C.
呕血病史采集要点

最新回复(0)

How many different five-digit positive integers can be formed using the digits 1

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

Earthquakeisashakingofthegroundcausedbythesuddenbreakingandthe

Recently,apossiblealternativewayofproducingpaperhasbeensuggestedb

【S1】[br]【S10】BBut和Still提示最后两句与前面所述形成转折，表示对用钱刺激上学这一作法的不赞同，所以此处应填有negative色彩的词，因

Fromahillside,KamalSaadatlookedforlornlyathundredsofpotentialcust

A

男性，50岁，体重80kg，身高165cm，平素体健，近被疑似糖尿病。此患者首选

根据《药品说明书和标签管理规定》，下列叙述错误的是A.药品标签由国务院药品监督管

抗日战争时期，民族矛盾上升为国内的主要矛盾，我们党建立了抗日民族统一战线；人民解

机械通气的目的包括（ ）。A.维持合适的通气量 B.改善肺的氧合功能 C.

呕血病史采集要点

机械通气的目的包括（　　）。A.维持合适的通气量 B.改善肺的氧合功能 C.