185. Each week, a subcommittee of four individuals is formed from among the members of a
committee comprising seven individuals. Two subcommittee members are then assigned
to lead the subcommittee, one as chair and the other as secretary.
Calculate the maximum number of consecutive weeks that can elapse without having the
subcommittee contain four individuals who have previously served together with the
same subcommittee chair.
(A) 70
(B) 140
(C) 210
(D) 420
(E) 840
寫作批改
VIP與詳解卡管理
私人筆記( 0 )
