I want to read 4 books over the next month.  My bookshelf has 12 different books.  In how many ways can I choose which books to read over the next month, without regard to the order that I read them?
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
I want to read 4 books over the next month.  My bookshelf has 12 different books.  In how many ways can I choose which books to read over the next month, without regard to the order that I read them?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
495
I want to read 4 books over the next month.  My bookshelf has 12 different books.  In how many ways can I choose which books to read over the next month, without regard to the order that I read them?
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