In how many different ways can someone arrange 8 books on a shelf?
2007-02-20 06:17:03 · 12 answers · asked by Math Freak 1990 1 in Education & Reference ➔ Homework Help
consider u have 8 empty places and u want to fill them with 8 different thing for the first one u have 8 options for second one u have 7 options .6 for third,5for fourth and......one for the eighth.so Will have 40320 different ways to arrange them .
2007-02-20 06:45:42 · answer #1 · answered by peyman_aa 2 · 0⤊ 0⤋
Think about there being 8 places to put books.
Lets start filling up the shelf.
In the first place we have 8 choice. Pick a book and put it in.
Now we have seven books and seven spots. We keep going untill all the spots are filled.
The answer is 8*7*6*5*4*3*2*1 = 40320
2007-02-20 06:30:53 · answer #2 · answered by theFo0t 3 · 0⤊ 0⤋
8!
Note: 8! = 8 x 7 x 6 x 5 x 4 x 3 x 2 x 1
Compute the result for your answer. But you should think about it also.
2007-02-20 06:28:25 · answer #3 · answered by Ursus Particularies 7 · 0⤊ 0⤋
8*7*6*5*4*3*2*1 = 40320
basically it's a factorial. 8!
2007-02-20 06:23:48 · answer #4 · answered by msbedouin 4 · 1⤊ 0⤋
if you have a calcultor i don't on me the n multiply 8 times 7 times 6 times 5 times 4 times 3 times 2 times 1 or if you want just write 8! which is the factorial of eight.
2007-02-20 06:33:20 · answer #5 · answered by charles h 4 · 0⤊ 0⤋
8! = 8*7*6*5*4*3*2*1 = 40320
2007-02-20 06:33:17 · answer #6 · answered by Anonymous · 0⤊ 0⤋
Just do 8*7*6*5*4*3*2*1, which will give you 40,320.
Hope I helped. Good luck!
2007-02-20 06:27:23 · answer #7 · answered by Dee 6 · 0⤊ 1⤋
By size
By color
Fiction or Not
Paperback or Hardback
Reading Level
2007-02-20 06:24:40 · answer #8 · answered by redstripedmama 4 · 0⤊ 1⤋
I think this is one of those "8!" problems, i.e. 8x7x6x5x4x3x2x1.
2007-02-20 06:24:32 · answer #9 · answered by baldisbeautiful 5 · 0⤊ 0⤋
the answer is 40320, hard to believe but true
2007-02-20 06:24:12 · answer #10 · answered by Honey!! 5 · 0⤊ 0⤋