M mittfull New member Joined Mar 29, 2021 Messages 2 Mar 29, 2021 #1 In how many different ways can a set of nine books be arranged on a shelf so that volumes one, two, and three are beside one another?
In how many different ways can a set of nine books be arranged on a shelf so that volumes one, two, and three are beside one another?
D Deleted member 4993 Guest Mar 29, 2021 #2 mittfull said: In how many different ways can a set of nine books be arranged on a shelf so that volumes one, two, and three are beside one another? Click to expand... Tie up volumes 1,2 and 3 - and count that as one book. Now you have 7 books to arrange. How many ways can you arrange those? How many ways can you arrange volumes 1,2 & 3? Now think....
mittfull said: In how many different ways can a set of nine books be arranged on a shelf so that volumes one, two, and three are beside one another? Click to expand... Tie up volumes 1,2 and 3 - and count that as one book. Now you have 7 books to arrange. How many ways can you arrange those? How many ways can you arrange volumes 1,2 & 3? Now think....
