there were 15 english books ,9 spanish books,17 french books on a shelf.How many ways can you pick two books without them being the same.

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- Sep 12th 2008, 07:59 AMkingfahadpermutation
there were 15 english books ,9 spanish books,17 french books on a shelf.How many ways can you pick two books without them being the same.

- Sep 12th 2008, 09:01 AMSoroban
Hello, kingfahad!

Quote:

There are 15 English books, 9 Spanish books, 17 French books on a shelf.

In how many ways can you pick two books without them being the same?

Answer: . ways to get two different languages.

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**Check**

There are: . possible choices of two books.

Hence, there are: . ways to get the__same__language.

Therefore, there are: . ways to get__different__languages.

By the way, these are**not**permuations.

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