Tuesday

September 2, 2014

September 2, 2014

Posted by **Sarah** on Monday, November 4, 2013 at 4:46am.

- Math -
**Reiny**, Monday, November 4, 2013 at 9:18amThink of it as 4 spots to fill

- you can fill the first spot with 4 different books

- that leaves you with 3 books to place, and the 2nd spot can be filled with any of those 3 remaining books.

- leaving you with 2 books, so the third spot can be filled with either of those 2 books

- which leaves you with 1 book to place in the last spot

Now, it becomes a multiplication, since for each of the first 4 placements I can repeat the last 3 routines, etc

no it becomes 4x3x2x1 or 4! or 24

reduce the problem to 3 books , and we list them.

books A, B, C

ABC - ACB

BAC - BCA

CAB - CBA ------> There are 6 of these, or 3x2x1

**Answer this Question**

**Related Questions**

O.CHEM -> PLEASE CHECK!! - Arrange the compounds in the order of increasing ...

College Math - Your small library of books consists of 6 novels, 7 mathematics ...

Math - John has 4 math books, 6 biology books,, and 8 statistics books to ...

Math - Ok, so my math teacher didn't tell us ways to do this faster, and it's ...

Chemistry - 1.Arrange the following oxides in the order of increasing basicity...

~*Math Probability*~ - Which expression would you use to figure out the number ...

math - in which order do the follownig fractions go in?3/8,2/7,4/9 arrange them ...

7th Grade Math Ms. Sue! - 4. Which expression would you use to figure out the ...

math - how many ways can you arrange three banks on a shelf

Lauren - Arrange the following in order of increasing ionic radius: I^-, Cs+, ...