In a box of 10 electrical parts, 2 are defective.(a)If you choose one part at r

游客2024-01-12 76

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? [br]

选项

答案 4/5

解析

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In a box of 10 electrical parts, 2 are defective.(a)If you choose one part at r

Terryishavinglunchatasaladbar.Therearetwotypesoflettucetochoosef

Whatistheareaoftheshadedfigure?[img]2011q3/ct_egmatqj_egmatqchoose_0056_2

If[img]2011q3/ct_egmatqm_egmatqchoose_0468_201121[/img]andxy=4,then7y+2x=[i

[img]2011q3/ct_egmatqm_egmatqchoose_0444_201121[/img]A、0.0125B、0.025C、0.1D、0.

[img]2011q3/ct_egmatqm_egmatqchoose_0443_201121[/img]A、 B、 C、

Whatistheperimeterofasquarewitharea[img]2011q3/ct_egmatqm_egmatqchoose_0

[img]2011q3/ct_egmatqm_egmatqchoose_0182_201121[/img]A、[img]2011q3/ct_egmatqm_eg

[img]2011q3/ct_egmatqm_egmatqchoose_0280_20112[/img]Anewspaperpolled1,000

[img]2011q3/ct_egmatqm_egmatqchoose_0104_201121[/img]A、 B、 C、

If8a=9bandab≠0,whatistheratioof[img]2011q3/ct_egmatqm_egmatqchoose_0098

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[originaltext]M:Doyoufeellikegoingtothecinema?W:Oh,yes.Wh

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舌苔脱落处舌面不光滑，仍有新生苔质颗粒者称()A.花剥苔 B.地图舌

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填石路基填筑方法有（）。A.倾填法 B.分层压实发 C.冲击压实法 D.浆

根据项目生命周期不同阶段和评价的目标，安全评价可分为()A:安全预评价 B:安

管道三通部分金属保护层施工时，垂直管与水平直通管在水平管上部相交时，应（ ）。

关于粘膜下肌瘤的临床表现下列哪项是错误的A、不规则阴道出血 B、发生症状较早较

管道三通部分金属保护层施工时，垂直管与水平直通管在水平管上部相交时，应（　　）。