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

游客2025-02-23 30

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

Marthainvited4friendstogowithhertothemovies.Thereare120differentw

Howmanydifferentfive-digitpositiveintegerscanbeformedusingthedigits1

Halhas4girlfriendsand5boyfriends.InhowmanydifferentwayscanHalinv

Inadistributionof850differentmeasurements,xcentimetersisatthe73rdpe

Inhowmanydifferentwayscan5identicalbluebooks,3identicalyellowbooks,

Ifn=pqr,wherep,q,andrarethreedifferentprimenumbers,howmanydiffere

Inhowmanydifferentwayscan3boysand3girlsbeseatedinarowof6chairs

Ifxandyaredifferentprimenumbers,eachgreaterthan2,whichofthefollow

Ifx,yandzaredifferentpositiveintegerslessthan10,whatisthegreatest

Whatisthetotalnumberofdifferent5-digitintegersthatcontainallofthed

Muchunfriendlyfeelingtowardscomputershasbeenbasedonthefearofwide

【B1】[br]【B16】A、upB、overC、inD、offB本句为词义逻辑搭配。“任务结束”，因此选择over。

Thecommitteedecidedthattheproposal______(应立即提交给国会).(should)besubmitted

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下列结论正确的是（ ）。

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