In a box of 10 electrical parts, 2 are defective. (a)If you choose one part at random from the box, what is the probability that

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问题 In a box of 10 electrical parts, 2 are defective.
(a)If you choose one part at random from the box, what is the probability that it is not defective?
(b)If you choose two parts at random from the box, without replacement, what is the probability that both are defective?

选项

答案1/45

解析

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本试题收录于： GRE QUANTITATIVE题库GRE分类

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In a box of 10 electrical parts, 2 are defective. (a)If you choose one part at random from the box, what is the probability that

GRE QUANTITATIVE

GRE

Theirdifferentattitudestothedifficulties______differentresults.

Expertssuggestusingadifferentpasswordforeverywebsiteyouvisit,andchangingthepasswordeveryfewmonths.Ittakestro

Themanhasaspecialtalentforartandis______ofamusician.

TheUnitedStateshaslongbeen______tobeamongthebestplacesintheworldforhighereducation.

Thosewhogainfamemostoftengainitasaresultofpossessingasingletalentorskill:singing,dancing,painting,orwritin

Howmanydifferentpositiveintegersarefactorsof342?

Ifxisapositive,single-digitintegersuchthat4x/3,2x,x,andx+2,and3x-2formanon-orderedlistofconsecutiveintegers

Ifrisnegativeandsispositive,whichofthefollowingmustbenegative?

Ifxandyareoddintegers,whichofthefollowingmustalwaysbeanon-integer?

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