If an integer is randomly selected from all positive 2-digit integers, what is t

游客2024-01-12 38

问题 If an integer is randomly selected from all positive 2-digit integers, what is the probability that the integer chosen has
(a)a 4 in the tens place?
(b)at least one 4 in the tens place or the units place?
(c)no 4 in either place? [br]

选项

答案 1/5

解析

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If an integer is randomly selected from all positive 2-digit integers, what is t

Whichofthefollowingisequaltothecubeofanon-integer?A、-64B、-1C、8D、9

Howmanypositivefactorsdo180and96haveincommon?A、6B、12C、16D、18E、24

Howmanydifferentpositiveintegersarefactorsof342?A、9B、11C、12D、20E、22

Whatisthesmallestintegerkforwhich64k＞414?A、4B、5C、6D、7E、8BIfwedon

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

Whichofthefollowingisequaltox24forallpositivevaluesofx?A、x12+x12B、

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Foranynumbersaandb,ab=ab(3-b).Ifaandabbothrepresentpositivenumbers

Ifx,y,andzarepositiveintegersandx2=y2+z2,whichofthefollowingmustb

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