![Itissaidthatmostpeoplehavenotmorethan30friendsatanygive...]( "Itissaidthatmostpeoplehavenotmorethan30friendsatanygive...")
- 問題詳情：Itissaidthatmostpeoplehavenotmorethan30friendsatanygiventime,and400overthewholeoftheirlives.However,onsocialnetworkingsites,mostusershaveabout150friends.Ifthesenumbersarecorrect,thenfriendshipmeansdifferentthingsindifferentsituations.Also,the...
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