Homework Help: math

Posted by betty r on Thursday, May 3, 2007 at 2:12am.

if you have 6 books how many groups of four different books can you make out of the six?

If we assume that the order we choose those four books doesn't matter then it is
_nC_r=
6!/(2!4!)
= ?

Isn't it 6*6*6*6???

No one has answered this question yet.

Answer this Question

Related Questions

math - Of 30 books (15 novels, 10 history books and 5 math books), how many ways...
pre calc - A math teacher uses four algebra books, two geometry books, and three...
algebra ll - The number of books checked out from the library varies directly ...
Alg2 - How many ways can six different books be arranged on a shelf if one of ...
math - lara arranged the books in her bookshelf by size. 2/10 of the books were ...
math - Lan has 6 books for each book he has 2 science books he has 2 animl books...
Math - Amanda checked out 7 fiction books from the library. She also checked out...
Pre-Algebra [Combinations] - Need help with these- 1.How many groups of 4 ...
Reading - Rosalind Wiseman books Terra Elan McVoy books Susane Colasanti books ...
math - MEghan had 36 books in her locker. Some were library books, text books ...

For Further Reading

First Name:
School Subject:
Answer: