Martha invited 4 friends to go with her to the movies. There are 120 different w

游客2024-01-12 39

问题 Martha invited 4 friends to go with her to the movies. There are 120 different ways in which they can sit together in a row of 5 seats, one person per seat. In how many of those ways is Martha sitting in the middle seat?

选项

答案 24

解析

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Martha invited 4 friends to go with her to the movies. There are 120 different w

Peterisgoingtoalake_________hecanfishwithhisfriends.A、whichB、hereC、w

他习惯和朋友通过微信来交流。HeisusedtocommunicatingwithfriendsontheWeChat.

Sixdifferentnumbersaretobeselectedfromthe(0,1,2,3,4,5,6)tocompos

Whatisthetotalnumberofdifferent5-digitintegersthatcontainallofthed

MachinesXandYrunatdifferentconstantrates，andmachineXcancompleteace

Themedianof21differentintegersis17.Whichofthefollowingistheleastp

Ifx,yandzaredifferentpositiveintegerslessthan10,whatisthegreatest

Ounceforounce,blendsofdifferentartificialsweetenersmatchanyindividual

InspectionsystemXandinspectionsystemY,thoughbasedondifferentprinciple

John:Ihavetriedseveraldifferenttypesofpsychotherapyatvarioustimesin

[originaltext]M:I’mAviArditti,andthisweekonWordmaster:wehaveaspecia

ABritishstudyfoundthatBvitaminscouldreducebrainshrinkageinolder

设立出版物零售企业或者其他单位、个人从事出版物零售业务，应当具备哪些条件?

施工资料表格打印时出现灰色背景，并且备案的编码没有打印出来，进行如下操作：第一步

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