Mar 10, 2011 #1 J justme1 Member Joined May 20, 2008 Messages 201 Reaction score 0 Points 16 ...are rung in sequence.? no bell is rung more than once. how many sequences are there?
Mar 10, 2011 #2 J JustinA Member Joined Jun 6, 2008 Messages 34 Reaction score 0 Points 6 8 x 7 x 6 = 336 You could also type "8 nPr 3" into a calculator