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  Acertainclubhas10members,includingHarry.Oneofthe10membersistobechosenatrandomtobethepresident,oneoftheremianing9membersistobechoseatrandomtobethesecretary,andoneoftheremaining8membersistobechosenatrandom

  Acertainclubhas10members,includingHarry.Oneofthe10membersistobechosenatrandomtobethepresident,oneoftheremianing9membersistobechoseatrandomtobethesecretary,andoneoftheremaining8membersistobechosenatrandomtobethetreasurer.WhatistheprobabilitythatHarrywillbeeitherthememberchosentobethesecretaryofthememberchosentobethetreasurer?

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2020-12-1713:33
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2020-12-17 13:37:57
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