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

游客2024-01-12 20

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 1/45

解析

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

—Youcouldn’thavechosenanygiftbetterforme.—______.A、Oh,I’dchooseabet

Ifx=-3,then[img]2011q3/ct_egmatqj_egmatqchoose_0027_20111[/img]A、-2B、-1C、201

[img]2011q3/ct_egmatqj_egmatqchoose_0024_20111[/img]A、21/58B、58/21C、21D、42E、

Terryishavinglunchatasaladbar.Therearetwotypesoflettucetochoosef

Whatistheareaoftheshadedfigure?[img]2011q3/ct_egmatqj_egmatqchoose_0056_2

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

If[img]2011q3/ct_egmatqm_egmatqchoose_0454_201121[/img]forallnumbersq,r,s

[img]2011q3/ct_egmatqm_egmatqchoose_0199_20112[/img]A、416B、224C、188D、104E、56

Whatistheperimeterofasquarewitharea[img]2011q3/ct_egmatqm_egmatqchoose_0

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

______andhappy,Tonystoodupandacceptedtheprize.A、SurprisingB、SurprisedC

PASSAGETWO[br]WhatdoweknowaboutBritons’viewabouteconomicgrowthandc

(1)HewasanoldmanwhofishedaloneinaboatintheGulfStreamandheha

JaneAustenwasanEnglishnovelist,whospentherlifeinmiddle-classsoc

CBSistreadingintopotentiallycontroversialrealityTVterritoryagain

商业保险的基本原则包括（）。 ①最大诚信原则 ②保险利益原则 ③损失补偿

下列需要进行含量均匀度检查的是A.含有剧毒药物的制剂B.小剂量的片剂C.含有易溶

一般来说，同等条件下分节驳运输比普通顶推运输成本降低（ ）。 A．5%～1

人在每一瞬间，将心理活动选择了某些对象而忽略了另一些对象。这一特点指的是注意的（

德育在人的全面发展教育中起着（）作用。 A.导向和动力B.关键C.基础

一般来说，同等条件下分节驳运输比普通顶推运输成本降低（　　）。 A．5%～1