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

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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

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