A bowl contains 20 marbles(8 blue, 6 red, 3 green, 2 yellow, and 1 orange). If y

游客2025-02-24 24

问题 A bowl contains 20 marbles(8 blue, 6 red, 3 green, 2 yellow, and 1 orange). If you reach in and choose one marble at random, what is the probability that it will be red?

选项

答案 3/10

解析 There is a total of 20 marbles in the bowl, 6 of which are red. If one marble is selected at random, the probability that it will be red is

This can be reduced to 3/10.

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A bowl contains 20 marbles(8 blue, 6 red, 3 green, 2 yellow, and 1 orange). If y

Abowlcontains20marbles(8blue,6red,3green,2yellow,and1orange).Ify

Acertainjarcontains60jellybeans—22white,18green,11yellow,5red,and

Aboxcontains5orangedisks,4reddisks,and1bluedisk.Youaretoselectt

Howmanycubiccentimetersofasolutionthatcontains15gramsofglucoseper1

Acertainjarcontains100jellybeans:50white,30green,10yellow,5red,4

A、containsmorethermalventsthantheadultenvironmentB、receivesmoreofits

Skincontainsmillionsofsensoryreceptorswhichinformthebrain,throughelec

Theskinofthepoisondartfrogcontainsdeadlypoisonscalledbatrachotoxins.

Yellowfever,thediseasethatkilled4,000Philadelphiansin1793,andso(i)__

Rain-soakedsoilcontainslessoxygenthandoesdriersoil.Therootsofmel

ThemostfamouspainterinVictoria’shistoryisEmilyCarr.Whenshewasa

（上海理工大学2006年试题）Inatelephonesurveyofmorethan2,000adults,21%saidth

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