问题标题:
英语innumberingthepagesofbook,555digitswereused.howmanypageswerethere?第2题thesymmetricalgeekcrosshasasquarepiece,theexactsizeofoneofitsarms,cutout.canyoucuttheremainsofthecrossintofourpiecesandthenrearr
问题描述:
英语innumberingthepagesofbook,555digitswereused.howmanypageswerethere?
第2题thesymmetricalgeekcrosshasasquarepiece,theexactsizeofoneofitsarms,cutout.canyoucuttheremainsofthecrossintofourpiecesandthenrearrangethepiecestoformasquare?
何家华回答:
9+99*2+3x=555,x=116,thereforetotalpages=9+99+116=224pages.
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