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

游客2025-02-24 27

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?

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答案 24

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

Twodifferentpositiveintegersxandyareselectedfromtheoddintegersthat

Marthainvited4friendstogowithhertothemovies.Thereare120differentw

InhowmanydifferentwayscanthelettersinthewordSTUDYbeordered?5!=120

Fromaboxof10lightbulbs,youaretoremove4.Howmanydifferentsetsof4l

Marthainvited4friendstogowithhertothemovies.Thereare120differentw

Agroupof20valueshasameanof85andamedianof80.Adifferentgroupof3

Howmanydifferentfive-digitpositiveintegerscanbeformedusingthedigits1

Inadistributionof850differentmeasurements,xcentimetersisatthe73rdpe

Inhowmanydifferentwayscan5identicalbluebooks,3identicalyellowbooks,

Ifn=pqr,wherep,q,andrarethreedifferentprimenumbers,howmanydiffere

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Formany,thepursuitofhappinessisalsothepursuitofprosperity.Parto

Theinjuredsoldierwasstill______(lively)whenthelocalpeasantsfoundhim.

为提高土地利用率，中、小学规划设计采取的正确措施是（ ）。A.增加学校建筑面积

朱某，女，高热5天，不恶寒，满面红赤，皮肤红斑鲜红，咽干，口渴，喜冷饮，尿赤而少

69、GOOSE报文采用（）方式传输A、单播B广播C、组播D、应

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