A talent contest has 8 contestants. Judges must award prizes for first, second,

游客2024-01-12 63

问题 A talent contest has 8 contestants. Judges must award prizes for first, second, and third places, with no ties.
(a)In how many different ways can the judges award the 3 prizes?
(b)How many different groups of 3 people can get prizes?

选项

答案 (a)336(b)56

解析

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A talent contest has 8 contestants. Judges must award prizes for first, second,

Thespeed______is340meterspersecond.A、atwhichsoundtravelsB、withwhichso

Inasecond-handbookshop,Billycameacrossabookwhichhethoughtwascertain

Thespeechcontestwillgivehimanopportunityto______histalent.A、denyB、deci

Let’sfinishourhomeworkinafewseconds;it’stimewe______.A、playedfootbal

Themanhasaspecialtalentforartandis______ofamusician.A、anybodyB、any

AsecondEinsteinnotewasalsosoldattheauction.爱因斯坦的第二张便条也在拍卖会上被卖出。

Theprimaryfunctionofthesecondparagraphofthepassageisto______[br]The

Theprimaryfunctionofthesecondparagraphofthepassageisto______[br]Acc

Theprimaryfunctionofthesecondparagraphofthepassageisto______[br]The

AnAmericanmanufacturerofracingbikesreporteda1996second-quartergrossin

Ahistoricalstudyoflanguageisa______studyoflanguage.A、synchronicB、diac

Veryfewpeoplecangetcollegedegreebefore11,butMichaelwasanexcepti

WhichofthefollowingsportsoriginatedfromScotland?A、Golf.B、Football.C、Bas

Thebiggestsafetythreatfacingairlinestodaymaynotbeaterroristwith

党对富农在不同时期实行不同的政策，体现的哲学道理是()。 A.分清主要矛盾和次

一般而言，下列哪种肺部疾病不宜采用电视胸腔镜手术治疗A.中央型肺癌 B.严重肺

战略性新兴产业是以重大技术突破和重大发展需求为基础，对经济社会全局和长远发展具有

窦房结细胞动作电位的主要特点是 A.动作电位去极相有超射现象 B.复极时间长

既可用于寿命期相等的方案比较，也可用于寿命期不等的方案比较的方法是()。A.

应激性溃疡出血时错误的治疗是（ ）。A.使用H2受体拮抗剂 B.使用胃粘膜保

应激性溃疡出血时错误的治疗是（　　）。A.使用H2受体拮抗剂 B.使用胃粘膜保