P pandapaws1 New member Mar 8, 2011 #1 adjacent books are chosen? Hint: represent the books that are chosen by bars and the books not chosen by stars. Count the number of sequences of five bars and seven stars so that no two bars are adjacent.
adjacent books are chosen? Hint: represent the books that are chosen by bars and the books not chosen by stars. Count the number of sequences of five bars and seven stars so that no two bars are adjacent.